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Common characteristics. Rechargeable characteristics. Thermal runaway. NiCd vs. NiMH vs. Li-ion vs. Li–polymer vs. LTO. See also. References. Comparison of commercial battery types. This is a list of commercially-available battery types summarizing some of their characteristics for ready comparison.
Fuel cells can produce electricity continuously for as long as fuel and oxygen are supplied. The first fuel cells were invented by Sir William Grove in 1838. The first commercial use of fuel cells came almost a century later following the invention of the hydrogen–oxygen fuel cell by Francis Thomas Bacon in 1932.
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. The fuel cell has a high efficiency peak at low load, while at high load the efficiency drops.
The MPG-equivalent combined city/highway fuel economy rating was 66 mpg ‑US (3.6 L/100 km; 79 mpg ‑imp), making the Mirai the most fuel-efficient hydrogen fuel cell vehicle rated at the time by the EPA, and the one with the longest range. [11]
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 [48] Vehicle Model year Combined . fuel economy City . fuel economy Highway. fuel economy Range Annual. fuel cost Hyundai Nexo: 2019–2021 61 mpg-e ...
battery, Hydrogen closed cycle H fuel cell [18] 1.62: Hydrazine decomposition (as monopropellant) 1.6: 1.6: Ammonium nitrate decomposition (as monopropellant) 1.4: 2.5: Thermal Energy Capacity of Molten Salt: 1 [citation needed] 98% [19] Molecular spring approximate [citation needed] 1: battery, Lithium–Manganese [20] [21] 0.83-1.01: 1.98-2. ...
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