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English: Department of Energy's Energy Efficiency and Renewable Energy Fuel Cell Technologies Program Fuel cell comparison chart. This shows a summary of the different types of fuel cells. Materials on the EERE Web site are in the public domain.
The alkaline fuel cell (AFC) or hydrogen-oxygen fuel cell was designed and first demonstrated publicly by Francis Thomas Bacon in 1959. It was used as a primary source of electrical energy in the Apollo space program. [41] The cell consists of two porous carbon electrodes impregnated with a suitable catalyst such as Pt, Ag, CoO, etc.
Using hydrogen's lower heating value, the maximum fuel cell efficiency would be 94.5%. [33] The efficiency of a hydrogen combustion engine can be similar to that of a traditional combustion engine. If well optimized, slightly higher efficiencies can be achieved. The comparison with a hydrogen fuel cell is interesting.
Hydrogen fuel-cell vehicles are related to electric cars, ... The fuel cell in the Toyota Mirai, the best-selling hydrogen car in the U.S., is rated at 90 kW (120 horsepower).
Theoretically, there will be enough emissions-free energy sources in the future to supply fuel cell vehicles, and the cost of making the hydrogen plants and building now-expensive fuel cells will ...
Comparison of fuel economy expressed in MPGe for hydrogen fuel cell vehicles . available for sale or lease in California and rated by the U.S. Environmental Protection Agency as of September 2021 [51] Vehicle Model year Combined . fuel economy City . fuel economy Highway. fuel economy Range Annual. fuel cost Hyundai Nexo: 2019–2021 61 mpg-e ...
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