FUEL CELL OEMS A - Z
Though the energy density is greater for hydrogen, you then need to add the weight of a fuel cell stack, which detracts from the apparent energy density. Conventional batteries include the conversion mechanism.
Hydrogen powered vehicles offer particulate free transport for cities where diesel engines are choking the population and causing lung cancer. There is an abundance of clean wind and solar energy that can produce green hydrogen, something that at the moment is not happening, but will accelerate as EVs become cheaper.
ADVENT TECHNOLOGIES ADN
All commercial fuel cells have a similar basic configuration, an electrolyte, permeable membrane and two electrodes, but there are different types of fuel cells based mainly on what electrolyte they use. Fuel cells are stacked and wired in series (just like lithium batteries) to raise the operating voltage.
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