In fact, the earliest FCV R & D car company is not Toyota, Honda, but the United States General Motors. As early as 1966, GM released the world's first FCV - Chevrolet Electrovan. Since then, GM has invested 4 billion US dollars for FCV research and development, but still can not solve the problem of high cost of FCV. Hydrogen fuel cell vehicles: the next revolution in new energy vehicles?
However, for FCV this has obvious advantages on lifePo4 batteries and can represent the future form of car products, car prices are reluctant to give up, still in the market action frequently: as the originator of FCV, GM out of market strategy, in recent years did not launch related products, But the company has never stopped FCV research and development, in October this year, GM will launch a Chevrolet Colorado FCV concept car; Audi car in November 2014 Los Angeles Auto Show, launched the A7 h-tronquattro concept car; BMW in 2015 Announced the launch of the FCV prototype based on the i8 and 5 series GT models, and announced the production version in 2020; Mercedes-Benz has already launched based on the B series FCV, in June this year, the company said it will be launched in 2017 The new FCV version of the GLC; Although Ford Motor did not launch FCV products in recent years, but in August this year, the company received the US Department of Energy to provide 600 million US dollars in research and development funding for FCV R & D.
Currently available in the market only 3 FCV, respectively, Toyota Mirai, Honda Clarity, modern ix35FC. These vehicles only in the hydrogen refueling station built relatively perfect regional sale, which means that consumers can not buy any one of the mainland FCV.
The article from : http://www.storagebattery-factory.com/news/Hydrogen-Fuel-Cell-Vehicle---F.html
- LiFePO4 Battery Wholesale Supplies
Tuesday, November 1, 2016
Chicago Aquarium Battery For Grid
The Chicago Schneider Aquarium demonstrates and protects the complexity of the Earth's aquatic ecosystem with its work. However, within the next few weeks, civic institutions will find themselves in another complex extension - albeit very man-made: the 21st century grid.
In June, Schneider installed 60,000 pounds of $ 20,000 batteries as part of an aquarium program, and by 2020, like all energy storage systems to reduce energy consumption by half as part of Shed's batteries will be invaluable for aquariums Of backup power and help meet peak demand.
But a 1-megawatt, lithium-ion system will also power the wider role in the way and demand balance across the entire region. Once its batteries are on-line, Schneider will be able to store the electricity sold to the electricity market operated by the PJM interconnected power grid, which manages power production and runs across 13 states and regional transmission organizations in the District of Columbia.
The battery was funded by a grant from the Illinois Department of Business and Economic Opportunity, installed by Schneider Electric. Bob Wengel, a vice president at the Shetland facility, said the batteries should be ready by the end of October.
At this point, Schneider will be the main force across the consumer electronics and power producers, a long-standing definition of the divide between existing power grids.
"If you go back 30 years, the grid is a one-way street," Wengel said in a recent visit to the Midwest Energy News Tour of a gale, rainy day aquarium energy system. The rise of wind and solar power helps reduce the pressure on natural resources, but also complicates the transportation of power grids.
Grid operators such as the PJM must ensure that the power flow is consistent and stable despite the rise of wind and sun as the energy source. Typically, reserve capacity is maintained by a fossil fuel power plant operating under conditions of sudden changes in supply or demand.
The lifePo4 batteries, like the person who was installed in Scheider, offers a cleaner alternative to the management grid.
"If you have enough batteries to do that ... you can close these plants," Wengel said. "Now wants to preserve natural resources."
The article from : http://www.storagebattery-factory.com/news/Chicago-Aquarium-Battery-For-G.html
In June, Schneider installed 60,000 pounds of $ 20,000 batteries as part of an aquarium program, and by 2020, like all energy storage systems to reduce energy consumption by half as part of Shed's batteries will be invaluable for aquariums Of backup power and help meet peak demand.
But a 1-megawatt, lithium-ion system will also power the wider role in the way and demand balance across the entire region. Once its batteries are on-line, Schneider will be able to store the electricity sold to the electricity market operated by the PJM interconnected power grid, which manages power production and runs across 13 states and regional transmission organizations in the District of Columbia.
The battery was funded by a grant from the Illinois Department of Business and Economic Opportunity, installed by Schneider Electric. Bob Wengel, a vice president at the Shetland facility, said the batteries should be ready by the end of October.
At this point, Schneider will be the main force across the consumer electronics and power producers, a long-standing definition of the divide between existing power grids.
"If you go back 30 years, the grid is a one-way street," Wengel said in a recent visit to the Midwest Energy News Tour of a gale, rainy day aquarium energy system. The rise of wind and solar power helps reduce the pressure on natural resources, but also complicates the transportation of power grids.
Grid operators such as the PJM must ensure that the power flow is consistent and stable despite the rise of wind and sun as the energy source. Typically, reserve capacity is maintained by a fossil fuel power plant operating under conditions of sudden changes in supply or demand.
The lifePo4 batteries, like the person who was installed in Scheider, offers a cleaner alternative to the management grid.
"If you have enough batteries to do that ... you can close these plants," Wengel said. "Now wants to preserve natural resources."
The article from : http://www.storagebattery-factory.com/news/Chicago-Aquarium-Battery-For-G.html
All In One Plug And Play Solar Panels
While a good idea, Australians should be wary of merging battery storage and inverters, promoting the use of solar panels with home appliances connected to the grid.
It is always exciting to see that new solar technologies are being developed; even if it is not fully ready for prime time. However, some products are marketed with a grain of salt to Australians, because not all products are suitable as recommended by the manufacturer.
The most recent example is the upcoming product, which combines a solar panel, energy storage and inverters. Panels can be added to increase output and capacity. The manufacturer said the owner of the system can plug directly into a house's external power outlet to provide electricity to the home.
This is a great idea in theory, but there is a significant potential problem with this - using such a product in connection to a power grid can be illegal in Australian housing.
A few years ago, another "plug and play" product produced some excitement - plug-and-play grid-connected PV inverters. Its use is also illegal in Australia.
Such gadgets must comply with other regulations, one of the Australian standards. AS 4777.1 states: "The inverter shall be connected to a switch-specific circuit via fixed wiring". When plugged into a power point, such a product will defy this standard.
These rules do not prevent access to technology because of it. There is a problem relating to the safety of a person who goes beyond the use of the apparatus.
For example, it is unclear whether these products have enough anti-island protection - they can cut out fast enough? Such protection can prevent such regimes from resuming activities in the event of power outages, exporting power to the electricity grid, and potentially endangering workers' lives.
Another real danger is the use of a so-called "suicide plug" to connect to a home's external power outlet. When one end is inserted into the panel, the other end has male male contacts on the exposed pins. Touch it, and active can carry the risk of electric shock.
The global online marketplace is increasingly providing the ultimate consumer with a variety of incredible gadgets and gadgets; but Australians need to do any product due diligence before buying. Use does not comply with Australia's safety standards, you can also put your home insurance policy risk electrical products bear in mind.
A home-installed solar powered protable generator solar cell + store something that may be best left to an expert who can legitimately advise you on the most appropriate (and safest) solution to your energy storage needs.
The article from : http://www.storagebattery-factory.com/news/All-In-One-Plug-And-Play-Solar.html
It is always exciting to see that new solar technologies are being developed; even if it is not fully ready for prime time. However, some products are marketed with a grain of salt to Australians, because not all products are suitable as recommended by the manufacturer.
The most recent example is the upcoming product, which combines a solar panel, energy storage and inverters. Panels can be added to increase output and capacity. The manufacturer said the owner of the system can plug directly into a house's external power outlet to provide electricity to the home.
This is a great idea in theory, but there is a significant potential problem with this - using such a product in connection to a power grid can be illegal in Australian housing.
A few years ago, another "plug and play" product produced some excitement - plug-and-play grid-connected PV inverters. Its use is also illegal in Australia.
Such gadgets must comply with other regulations, one of the Australian standards. AS 4777.1 states: "The inverter shall be connected to a switch-specific circuit via fixed wiring". When plugged into a power point, such a product will defy this standard.
These rules do not prevent access to technology because of it. There is a problem relating to the safety of a person who goes beyond the use of the apparatus.
For example, it is unclear whether these products have enough anti-island protection - they can cut out fast enough? Such protection can prevent such regimes from resuming activities in the event of power outages, exporting power to the electricity grid, and potentially endangering workers' lives.
Another real danger is the use of a so-called "suicide plug" to connect to a home's external power outlet. When one end is inserted into the panel, the other end has male male contacts on the exposed pins. Touch it, and active can carry the risk of electric shock.
The global online marketplace is increasingly providing the ultimate consumer with a variety of incredible gadgets and gadgets; but Australians need to do any product due diligence before buying. Use does not comply with Australia's safety standards, you can also put your home insurance policy risk electrical products bear in mind.
A home-installed solar powered protable generator solar cell + store something that may be best left to an expert who can legitimately advise you on the most appropriate (and safest) solution to your energy storage needs.
The article from : http://www.storagebattery-factory.com/news/All-In-One-Plug-And-Play-Solar.html
Utilization Of Solar Photovoltaic Systems
From the actual test data for more than 30 years (1961-1990), Arizona's sunny, high-direct-component, solar power generator system: fixed-angle solar collectors can be increased by more than horizontal installed solar collectors 14% of the output; single-axis horizontal tracking can increase 40.4%, single-axis latitude and longitude angle collector can increase the gain of 51%; and biaxial accurate tracking system to increase 56%. Illustrations of different tracking systems.
European countries generally used incentive policy is "on-grid price" policy, that is, the power company to buy electricity at a price higher than the conventional electricity, the state for more than the normal price of electricity to compensate for the part of the compensation through the green power additional apportioned to Grid sales price to go. With such a law, the installation of photovoltaic power generation users can earn revenue through the sale of green power; bank loans can be recovered in full; photovoltaic cell manufacturers through sales of solar cells to make money; the government reached the purpose of promoting clean energy; The government paid green power additional compensation; through the media's extensive publicity, those who buy green power know that they are to protect the environment and the environment, Energy and sustainable development to make contributions, but also willing to purchase voluntarily.
Germany first implemented the "on-grid tariff" method, and achieved remarkable results, the successful implementation of 100,000 roof plan, photovoltaic power generation installed for many years ranked first in the world. Following the German, Spain, Italy, France, the Netherlands and other European countries have to follow suit, has introduced their own electricity price policy. Now, Australia, South Korea, and even India are also beginning to implement the "feed-in tariff" policy. In the United States, incentives for PV power vary from state to state. Subsidies based on "feed-in tariffs" are limited, with initial investment subsidies, tax incentives, and net electricity meters being used. Obama took office after the financial crisis, the United States launched 800 billion US dollars of the Salvation Plan, including 96 billion US dollars for renewable energy tax compensation, hoping to stimulate the market through renewable energy subsidies.
Japan implemented the installation of photovoltaic power generation system to subsidize the initial investment, the subsidy decreased year by year, from the beginning to subsidize 50%, 10 years, declining year by year, subsidies to zero to zero, 2005, the Japanese rooftop photovoltaic Subsidies for the system are no longer available. In addition to the installation subsidies for PV systems, it also allows photovoltaic power generation systems to "feed back" to the grid, meaning that power companies buy electricity from photovoltaic systems at the same price, similar to the US "net meter metering" method; The original very high, equivalent to 2,0-2,4 yuan per kilowatt-hour electricity, therefore, even if there is no initial investment subsidies, there is still a considerable market in Japan.
The subsidy policy was restarted in 2009 and, starting in January, Japan plans to restore all subsidies to the solar panel industry, the world's fifth largest producer of greenhouse gas emissions reductions. Japan's "low-carbon action plan" in 2020, Japan's total installed capacity of photovoltaic power generation in 2005 reached 20 times to reach our country's "Renewable Energy Law" has been February 28, 2005 approved by the NPC Standing Committee in 2006, 2006 January 1 only to take effect. China's "Renewable Energy Law" is basically the same with Germany's "on-grid tariff" policy means that the initial investment in power generation system by the project developers themselves, the developer through the declaration to obtain administrative license after the construction of photovoltaic power generation projects, Costs and Profits The Company shall purchase photovoltaic power in full in accordance with the reasonable on-grid electricity price (cost plus reasonable profit) by recovering electricity from the sale of photovoltaic power generation systems. Beyond the normal part of the Internet price, power companies do not paste the money, but by the way electricity tariff imposed on the user to share in the national grid.
In 2007, the State Electricity Regulatory Commission promulgated Decree No. 25 of 2007: Measures for the Supervision and Control of Renewable Energies for Power Grid Enterprises, which came into force on September 1, 2007, emphasizing that the power grid enterprises must follow the principle of Renewable Energy Law Priority acquisition of renewable solar powered portable generator directors, and provide grid access services (the cost of grid access system is also included in the national electricity price grid apportioned.) Grid companies to purchase renewable energy electric clock costs incurred higher than in accordance with conventional The difference between the costs of calculating the average price of electricity generated by electricity generation shall be apportioned among the sales electricity price. The Interim Measures shall impose additional charging standards, scope, tariff distribution and balance schemes for renewable energy tariffs, and renewable Energy tariff subsidy application process, electricity price settlement and tariff quota trading program have made clear provisions.
The article from : http://www.storagebattery-factory.com/news/utilization-of-solar-photovoltaic-systems.html
European countries generally used incentive policy is "on-grid price" policy, that is, the power company to buy electricity at a price higher than the conventional electricity, the state for more than the normal price of electricity to compensate for the part of the compensation through the green power additional apportioned to Grid sales price to go. With such a law, the installation of photovoltaic power generation users can earn revenue through the sale of green power; bank loans can be recovered in full; photovoltaic cell manufacturers through sales of solar cells to make money; the government reached the purpose of promoting clean energy; The government paid green power additional compensation; through the media's extensive publicity, those who buy green power know that they are to protect the environment and the environment, Energy and sustainable development to make contributions, but also willing to purchase voluntarily.
Germany first implemented the "on-grid tariff" method, and achieved remarkable results, the successful implementation of 100,000 roof plan, photovoltaic power generation installed for many years ranked first in the world. Following the German, Spain, Italy, France, the Netherlands and other European countries have to follow suit, has introduced their own electricity price policy. Now, Australia, South Korea, and even India are also beginning to implement the "feed-in tariff" policy. In the United States, incentives for PV power vary from state to state. Subsidies based on "feed-in tariffs" are limited, with initial investment subsidies, tax incentives, and net electricity meters being used. Obama took office after the financial crisis, the United States launched 800 billion US dollars of the Salvation Plan, including 96 billion US dollars for renewable energy tax compensation, hoping to stimulate the market through renewable energy subsidies.
Japan implemented the installation of photovoltaic power generation system to subsidize the initial investment, the subsidy decreased year by year, from the beginning to subsidize 50%, 10 years, declining year by year, subsidies to zero to zero, 2005, the Japanese rooftop photovoltaic Subsidies for the system are no longer available. In addition to the installation subsidies for PV systems, it also allows photovoltaic power generation systems to "feed back" to the grid, meaning that power companies buy electricity from photovoltaic systems at the same price, similar to the US "net meter metering" method; The original very high, equivalent to 2,0-2,4 yuan per kilowatt-hour electricity, therefore, even if there is no initial investment subsidies, there is still a considerable market in Japan.
The subsidy policy was restarted in 2009 and, starting in January, Japan plans to restore all subsidies to the solar panel industry, the world's fifth largest producer of greenhouse gas emissions reductions. Japan's "low-carbon action plan" in 2020, Japan's total installed capacity of photovoltaic power generation in 2005 reached 20 times to reach our country's "Renewable Energy Law" has been February 28, 2005 approved by the NPC Standing Committee in 2006, 2006 January 1 only to take effect. China's "Renewable Energy Law" is basically the same with Germany's "on-grid tariff" policy means that the initial investment in power generation system by the project developers themselves, the developer through the declaration to obtain administrative license after the construction of photovoltaic power generation projects, Costs and Profits The Company shall purchase photovoltaic power in full in accordance with the reasonable on-grid electricity price (cost plus reasonable profit) by recovering electricity from the sale of photovoltaic power generation systems. Beyond the normal part of the Internet price, power companies do not paste the money, but by the way electricity tariff imposed on the user to share in the national grid.
In 2007, the State Electricity Regulatory Commission promulgated Decree No. 25 of 2007: Measures for the Supervision and Control of Renewable Energies for Power Grid Enterprises, which came into force on September 1, 2007, emphasizing that the power grid enterprises must follow the principle of Renewable Energy Law Priority acquisition of renewable solar powered portable generator directors, and provide grid access services (the cost of grid access system is also included in the national electricity price grid apportioned.) Grid companies to purchase renewable energy electric clock costs incurred higher than in accordance with conventional The difference between the costs of calculating the average price of electricity generated by electricity generation shall be apportioned among the sales electricity price. The Interim Measures shall impose additional charging standards, scope, tariff distribution and balance schemes for renewable energy tariffs, and renewable Energy tariff subsidy application process, electricity price settlement and tariff quota trading program have made clear provisions.
The article from : http://www.storagebattery-factory.com/news/utilization-of-solar-photovoltaic-systems.html
Polycrystalline Silicon Cells and Amorphous Solar Power Batteries
Monocrystalline silicon solar power batteries are the most efficient conversion of silicon cells, is also the most stable performance of a, Nai its production process energy consumption is high, monocrystalline silicon rods cut and cut also need energy consumption and material loss Great. Therefore, the development of other types of silicon cells to pay attention. At present, solar power batteries and amorphous silicon cells have been put into industrial production and a large number of people into the market. Polysilicon does not have the same crystal structure as monocrystalline silicon, and a large number of fine silicon crystals are disordered in the material. Polycrystalline silicon cell conversion efficiency than single-crystal silicon cells, but its production process consumes less energy.
The crucible growth method is a polysilicon rod obtained by pouring molten silicon into a crucible and controlling the cooling rate thereof so that the cross section thereof may be square. Square silicon rods need to be sawed to get the battery wafer, but to avoid the circular wafer cut into a square process, thereby reducing the production of solar power batteries in the process of energy consumption and material waste solar powered portable generator. This method of production of polycrystalline silicon cell conversion efficiency inch up to 15%. Method is directly from the molten silicon out of a cross-section of octagonal polysilicon, the wall thickness of 3300 and up to 6 to. The octagonal tube can then be cut into individual cell wafers with a laser. It is reported that this method of production of polycrystalline silicon cell conversion efficiency has reached 14%.
Polycrystalline silicon cells still maintain the basic characteristics of the crystal, so it is an indirect band gap of 1.16 of the band gap material, wafer manufacturing follow-up process and monocrystalline silicon cells the same. In order to ensure sufficient light absorption, the wafer also requires a larger thickness. Amorphous silicon does not have a specific crystal structure, the direction of the silicon atoms are arranged in random order and the spacing is different from one another solar powered portable generator, resulting in many covalent bonds in the material is not complete. This incomplete covalent bond produces a large number of defect states in the band gap. Amorphous properties lead to poor mobility of electron holes in the material, while the defect state will capture the carrier. So people are not optimistic about the beginning of this material. It was not until 1975 that the material of the Heart II was obtained that it was found that the dangling bonds were suppressed by hydrogen to greatly reduce defect states in the bandgap.
Early amorphous silicon cells in the light of performance degradation, through the design and production technology development, such as the use of multi-junction technology, making the amorphous solar power batteries performance has been stable. The theoretical maximum conversion efficiency of amorphous silicon is 27%, and the conversion efficiency of commercialized products is about 10%. Because it can be made using deposition technology, and the thickness of the material can be made very thin, amorphous silicon cells can be produced instainless steel and polymer substrates to form flexible flexible products. On the indirect bandgap materials, monocrystalline silicon, there is no certain thickness can not guarantee high conversion efficiency, solar powered portable generator while the advantages of amorphous silicon thin-film battery can save a lot of expensive pure silicon material, so in the production of thin-film battery, the non- Crystalline silicon has its advantages.
The article from : http://www.storagebattery-factory.com/news/Polycrystalline-Silicon-Cells-and-Amorphous-Solar-Power-Batteries.html
The crucible growth method is a polysilicon rod obtained by pouring molten silicon into a crucible and controlling the cooling rate thereof so that the cross section thereof may be square. Square silicon rods need to be sawed to get the battery wafer, but to avoid the circular wafer cut into a square process, thereby reducing the production of solar power batteries in the process of energy consumption and material waste solar powered portable generator. This method of production of polycrystalline silicon cell conversion efficiency inch up to 15%. Method is directly from the molten silicon out of a cross-section of octagonal polysilicon, the wall thickness of 3300 and up to 6 to. The octagonal tube can then be cut into individual cell wafers with a laser. It is reported that this method of production of polycrystalline silicon cell conversion efficiency has reached 14%.
Polycrystalline silicon cells still maintain the basic characteristics of the crystal, so it is an indirect band gap of 1.16 of the band gap material, wafer manufacturing follow-up process and monocrystalline silicon cells the same. In order to ensure sufficient light absorption, the wafer also requires a larger thickness. Amorphous silicon does not have a specific crystal structure, the direction of the silicon atoms are arranged in random order and the spacing is different from one another solar powered portable generator, resulting in many covalent bonds in the material is not complete
Early amorphous silicon cells in the light of performance degradation, through the design and production technology development, such as the use of multi-junction technology, making the amorphous solar power batteries performance has been stable. The theoretical maximum conversion efficiency of amorphous silicon is 27%, and the conversion efficiency of commercialized products is about 10%. Because it can be made using deposition technology, and the thickness of the material can be made very thin, amorphous silicon cells can be produced instainless steel and polymer substrates to form flexible flexible products. On the indirect bandgap materials, monocrystalline silicon, there is no certain thickness can not guarantee high conversion efficiency, solar powered portable generator while the advantages of amorphous silicon thin-film battery can save a lot of expensive pure silicon material, so in the production of thin-film battery, the non- Crystalline silicon has its advantages.
Organic Solar Power Batteries
The new solar power batteries, which are essentially different from the ones described earlier in this chapter, are organic solar power batteries; as the name implies, are solar cells that form the core of organic materials. In organic materials, the absorption of photons does not produce electrons and holes, but generates an exciton. An exciton is in effect a confined electron-hole pair, which must be overcome in order to release the charge therein. To this end, a variety of mechanisms have been studied to form different types of organicsolar power batteries that rely on these mechanisms.
Schottky type "organic battery
The first organic solar power batteries are commonly referred to as "Schottky type" of organic batteries, which uses organic materials for the magnesium phthalocyanine dye, the dye layer sandwiched between two different electrodes in the work function has been 200! In this cell, the absorption of photons produces a pair of electrons and holes in the organic semiconductor film, where electrons are extracted by the electrodes of the low work function and the holes are filled with electrons from the high work-function electrode, Thereby forming a photocurrent. The Schottky barrier formed by the contact between the organic semiconducting film and the electrodes of two non-workfunctions is the basis of the photo-induced charge transfer solar powered portable generator. In this cell, the excitons formed by photoexcitation can be separated only by the electric field in the diffusion layer of the Schottky junction. Excitons at other sites have a limited migration distance (usually less than most recombines before they are separated into electrons and holes.) The conversion efficiency of such cells is usually low, usually less than 1%.
Double-layer organic battery
Another type of organic solar power batteries uses a double-layer membrane structure, the essence of double-layer film is to use two kinds of organic semiconductor materials to imitate the inorganic heterojunction. In a heterojunction organic battery, a type material is usually referred to as a donor, and a type material is called an acceptor, and if the light is incident from the donor material side, the electrons in the exciton are lowered along the valence band And the holes are transferred from the valence band of the acceptor to the valence band of the donor region in the direction of the rising energy of the conduction band.When the electrons and holes move from the conduction band of donor to the conduction band of the donor, The excitons are separated into free electrons and holes are diffused to the electrode, resulting in photocurrent.The heterojunction significantly improved the efficiency of exciton separation, the earliest of a heterojunction cell called organic dyes And a copper-phthalocyanine double-layer film was formed, and the photoelectric conversion efficiency was about 1% .In 1992, it was found that excited states of electrons can be injected from organic semiconductors very quickly.In the molecule, And the reverse process is much slower. That is to say, the exciton can realize the charge separation at a very high rate at the interface between the organic semiconducting material and the organic semiconductor material, so it is a good electron acceptor material. A heterojunction heterojunction solar cell was fabricated by using a kind of organic semiconducting material, and the conversion efficiency of the heterojunction organic cell was up to 6%.
Although the interface between the two films has a large area, the excitons can only be separated in the interface region, and the excitons generated far from the interface are lost in the process of moving to the electrode. So people in the double-layer membrane heterojunction based on the battery and put forward a concept known as the overall heterojunction), is the donor material and the receptor material made of a mixed with you, you have me , The excitons generated at any position can reach the interface between the donor and the acceptor through a short path. At the same time, the positive and negative carriers formed at the interface can be formed by a shorter route Reach the electrode solar powered portable generator. Compared with double-layer membrane cells, the efficiency of this structure is quite obvious.
Dye - sensitized cell
Another new type of plastic solar power batteries can also be included in the list of organic photovoltaic cells, that is, dye-sensitized solar cells, by the Swiss Institute of Higher Engineering in Lausanne. The battery breakthrough is mainly to imitate the principle of photosynthesis. The substrate may be glass or a flexible, transparent polymer foil. The substrate has a layer of transparent conductive oxide, typically silicon dioxide, on which is then grown a thick film of about 10 nanometer porous titanium dioxide particles and then coated with a layer of terpyridine derivative dye Of the particles. The electrodes of the upper layer are in addition to glass or polymer and cobalt is also added as a catalyst for the electrolyte reaction solar powered portable generator. Between the two-layer electrode is injected into the electrolyte. The working principle of the battery dye molecules absorb solar energy transition to the excited state, the excited state is unstable, the electron quickly into the adjacent conduction band, the dye in the loss of electrons are quickly compensated from the electrolyte, into the The electrons in the conduction band eventually enter the conductive film, and then generate a photocurrent through the outer loop. 1998 0 4, and so successfully produced all solid-state dye nanocrystalline solar cells for solar powered portable generator, to overcome the liquid electrolyte exists due to a series of problems. In 2003, they improved their performance by doping. At present, the dye-sensitized cell of the highest conversion efficiency of about 10%.
The article from : http://www.storagebattery-factory.com/news/Organic-Solar-Power-Batteries.html
Schottky type "organic battery
The first organic solar power batteries are commonly referred to as "Schottky type" of organic batteries, which uses organic materials for the magnesium phthalocyanine dye, the dye layer sandwiched between two different electrodes in the work function has been 200! In this cell, the absorption of photons produces a pair of electrons and holes in the organic semiconductor film, where electrons are extracted by the electrodes of the low work function and the holes are filled with electrons from the high work-function electrode, Thereby forming a photocurrent. The Schottky barrier formed by the contact between the organic semiconducting film and the electrodes of two non-workfunctions is the basis of the photo-induced charge transfer solar powered portable generator. In this cell, the excitons formed by photoexcitation can be separated only by the electric field in the diffusion layer of the Schottky junction. Excitons at other sites have a limited migration distance (usually less than most recombines before they are separated into electrons and holes.) The conversion efficiency of such cells is usually low, usually less than 1%.
Double-layer organic battery
Another type of organic solar power batteries uses a double-layer membrane structure, the essence of double-layer film is to use two kinds of organic semiconductor materials to imitate the inorganic heterojunction. In a heterojunction organic battery, a type material is usually referred to as a donor, and a type material is called an acceptor, and if the light is incident from the donor material side, the electrons in the exciton are lowered along the valence band And the holes are transferred from the valence band of the acceptor to the valence band of the donor region in the direction of the rising energy of the conduction band.When the electrons and holes move from the conduction band of donor to the conduction band of the donor, The excitons are separated into free electrons and holes are diffused to the electrode, resulting in photocurrent.The heterojunction significantly improved the efficiency of exciton separation, the earliest of a heterojunction cell called organic dyes And a copper-phthalocyanine double-layer film was formed, and the photoelectric conversion efficiency was about 1% .In 1992, it was found that excited states of electrons can be injected from organic semiconductors very quickly.In the molecule, And the reverse process is much slower. That is to say, the exciton can realize the charge separation at a very high rate at the interface between the organic semiconducting material and the organic semiconductor material, so it is a good electron acceptor material. A heterojunction heterojunction solar cell was fabricated by using a kind of organic semiconducting material, and the conversion efficiency of the heterojunction organic cell was up to 6%.
Although the interface between the two films has a large area, the excitons can only be separated in the interface region, and the excitons generated far from the interface are lost in the process of moving to the electrode. So people in the double-layer membrane heterojunction based on the battery and put forward a concept known as the overall heterojunction), is the donor material and the receptor material made of a mixed with you, you have me , The excitons generated at any position can reach the interface between the donor and the acceptor through a short path. At the same time, the positive and negative carriers formed at the interface can be formed by a shorter route Reach the electrode solar powered portable generator. Compared with double-layer membrane cells, the efficiency of this structure is quite obvious.
Dye - sensitized cell
Another new type of plastic solar power batteries can also be included in the list of organic photovoltaic cells, that is, dye-sensitized solar cells, by the Swiss Institute of Higher Engineering in Lausanne. The battery breakthrough is mainly to imitate the principle of photosynthesis. The substrate may be glass or a flexible, transparent polymer foil. The substrate has a layer of transparent conductive oxide, typically silicon dioxide, on which is then grown a thick film of about 10 nanometer porous titanium dioxide particles and then coated with a layer of terpyridine derivative dye Of the particles. The electrodes of the upper layer are in addition to glass or polymer and cobalt is also added as a catalyst for the electrolyte reaction solar powered portable generator. Between the two-layer electrode is injected into the electrolyte. The working principle of the battery dye molecules absorb solar energy transition to the excited state, the excited state is unstable, the electron quickly into the adjacent conduction band, the dye in the loss of electrons are quickly compensated from the electrolyte, into the The electrons in the conduction band eventually enter the conductive film, and then generate a photocurrent through the outer loop. 1998 0 4, and so successfully produced all solid-state dye nanocrystalline solar cells for solar powered portable generator, to overcome the liquid electrolyte exists due to a series of problems. In 2003, they improved their performance by doping. At present, the dye-sensitized cell of the highest conversion efficiency of about 10%.
The article from : http://www.storagebattery-factory.com/news/Organic-Solar-Power-Batteries.html
Solar Power Batteries Technology
So far, the discussion is the visible and near-infrared light photoelectric conversion, the reason is the peak of the solar spectrum in the visible range. However, both the heat source and the heat source can produce radiation in the far-infrared range, and in some cases, convert this radiation into electrical energy. The photon's temperature is much lower than the temperature of visible light, so the average photon energy of radiation is far less than sunlight. These photons are higher energy absorbed by the solar power batteries for solar powered portable generator into electrical energy, and energy which is smaller and reflected back, easily absorbed by the heat sink to maintain the temperature of the heat absorption device.
In the discussion so far, an absorbed photon produces an electron-hole pair. If a material has an intermediate band between the conduction band and the valence band and is inserted between the two general semiconductors, it is possible for the material to absorb two less energy photons and produce a photon with the combination of the two photons Energy of an electron-hole pair. The first photon lifts an electron to the intermediate band and creates a hole in the valence band, while the second photon lifts the electron from the intermediate band to the conduction band. The key is to find such an intermediate band material that can hold the electrons on the intermediate band and wait for the photons with the appropriate energy to hit the material. To support this electron transport process, the electronic energy state of the material needs to be half empty and half electron occupied. Compounds may fulfill this technique and allow the theoretical conversion efficiency of the cell to reach 63,2%.
If the battery uses a lot of layers of laminated structure, the bandgap of the largest material on the top, and down the layers of the bandgap layer by layer, you can reach the theoretical conversion efficiency of 86.8%. A 4-layer cell with an area of 10 A has been fabricated with an efficiency of 35.4% and a theoretical maximum efficiency of 41.6%. The hot-carrier battery uses the method of avoiding the inelastic collisions of the photogenerated carriers to reduce the energy loss, and the limit efficiency is about 86.8%. The excess energy of the photon confers a high thermal energy on the carrier. These "hot carriers" first reach a certain thermal equilibrium by the collision between the carriers after about a few picoseconds after being excited. The collision of these carriers does not result in energy loss, but causes redistribution of energy between the carriers. Then, after a few nanoseconds, the carriers collide with the lattice and transfer the energy to the lattice. After a few microseconds of light, if the electrons and holes can not be effectively separated into positive and negative, they will re-composite.
Hot-carrier solar power batteries are required to collect electrons and holes before they cool down to the positive and negative sides of the cell. So the absorption layer must be very thin, about tens of nanometers. The use of superlattice structure as the absorption layer can delay the carrier cooling, increase the thickness of the absorber layer, improve the absorption of light. An alternative to changing the material bandgap is to change the energy distribution of the emission spectrum. Some materials have the ability to absorb two photons with different energies and emit their combined energy with a single photon. In addition some of the material can be absorbed by a high-energy photon energy to two low-energy photon emitted. These phenomena are similar to band up-conversion and down-conversion in a wireless communication circuit.
This method is reflected in the optical shape of the spectrum is changed, the spectrum of human light can be compressed to a relatively narrow range and increase its strength, thereby improving the conversion efficiency of the battery. One advantage of this method is that it is not necessary to place the optical up-down converter with the photovoltaic cell, simply by placing it between the source and the solar power batteries.
The article from : http://www.storagebattery-factory.com/news/Solar-Power-Batteries-Technology.html
In the discussion so far, an absorbed photon produces an electron-hole pair. If a material has an intermediate band between the conduction band and the valence band and is inserted between the two general semiconductors, it is possible for the material to absorb two less energy photons and produce a photon with the combination of the two photons Energy of an electron-hole pair. The first photon lifts an electron to the intermediate band and creates a hole in the valence band, while the second photon lifts the electron from the intermediate band to the conduction band. The key is to find such an intermediate band material that can hold the electrons on the intermediate band and wait for the photons with the appropriate energy to hit the material. To support this electron transport process, the electronic energy state of the material needs to be half empty and half electron occupied. Compounds may fulfill this technique and allow the theoretical conversion efficiency of the cell to reach 63,2%.
If the battery uses a lot of layers of laminated structure, the bandgap of the largest material on the top, and down the layers of the bandgap layer by layer, you can reach the theoretical conversion efficiency of 86.8%. A 4-layer cell with an area of 10 A has been fabricated with an efficiency of 35.4% and a theoretical maximum efficiency of 41.6%. The hot-carrier battery uses the method of avoiding the inelastic collisions of the photogenerated carriers to reduce the energy loss, and the limit efficiency is about 86.8%. The excess energy of the photon confers a high thermal energy on the carrier. These "hot carriers" first reach a certain thermal equilibrium by the collision between the carriers after about a few picoseconds after being excited. The collision of these carriers does not result in energy loss, but causes redistribution of energy between the carriers. Then, after a few nanoseconds, the carriers collide with the lattice and transfer the energy to the lattice. After a few microseconds of light, if the electrons and holes can not be effectively separated into positive and negative, they will re-composite.
Hot-carrier solar power batteries are required to collect electrons and holes before they cool down to the positive and negative sides of the cell. So the absorption layer must be very thin, about tens of nanometers. The use of superlattice structure as the absorption layer can delay the carrier cooling, increase the thickness of the absorber layer, improve the absorption of light. An alternative to changing the material bandgap is to change the energy distribution of the emission spectrum. Some materials have the ability to absorb two photons with different energies and emit their combined energy with a single photon. In addition some of the material can be absorbed by a high-energy photon energy to two low-energy photon emitted. These phenomena are similar to band up-conversion and down-conversion in a wireless communication circuit.
This method is reflected in the optical shape of the spectrum is changed, the spectrum of human light can be compressed to a relatively narrow range and increase its strength, thereby improving the conversion efficiency of the battery. One advantage of this method is that it is not necessary to place the optical up-down converter with the photovoltaic cell, simply by placing it between the source and the solar power batteries.
The article from : http://www.storagebattery-factory.com/news/Solar-Power-Batteries-Technology.html
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