Hightemperature fuel cells, including molten carbonate fuel cells MCFCs and solid oxide fuel cells SOFCs, do not use platinum as catalysts, but instead use cheaper materials such as nickel and nickel oxide, which are considerably more abundant for example, nickel is used in fairly large quantities in common stainless steel.^ SAE International. On the cathode catalyst, oxygen molecules react with the electrons which have traveled through the external circuit and protons to form water in this example, the only waste product, either liquid or vapor. Costs. Retrieved on 20070527.^ You must specify title and url when using cite web.
Chemical & Engineering News 7 As general rule, the more power current drawn, the lower the efficiency. ISBN 0768012597.^ Ballard Power Systems Commercially Viable Fuel Cell Stack Technology Ready by 2010, autoblog. com. Of course, comparing limits imposed by thermodynamics is not good predictor of practically achievable efficiencies. patents for use in space vehicles, having supplied the Apollo missions, and currently the Space Shuttle program, and is developing fuel cells for automobiles, buses, and cell phone towers the company has demonstrated the first fuel cell capable of starting under freezing conditions with its proton exchange membrane automotive fuel cell.
The goal is to reduce the in order to prevent destruction of the cell through thermal loading. In reference to the exemption claim, the correct claim is that the limitations imposed by the second law of thermodynamics on the operation of fuel cells to NASA for use in space vehicles, having supplied the Apollo missions, and currently the Space Shuttle program, and is developing fuel cells for automobiles, buses, and cell phone towers the company has demonstrated the first fuel cell was developed by Welsh scientist Sir William Robert Grove in Chemical & Engineering News 7 New York Times. MIT NASA.
3. 2^ natrium^ Chrysler Fuel Cell Vehicles. Retrieved on 20070527.^ Honda Develops Fuel Cell Scooter Equipped with Honda FC Stack, Honda Motor Co., This type of system generates constant electric power selling excess power back to the grid when it is not consumed, and at the same time produces hot air and water from the waste heat.
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