Maeda, K. et al. Photocatalyst releasing hydrogen from water.
Most fuel cells get their hydrogen from an external device called a reformer that extracts the hydrogen from natural gas or some other hydrocarbon fuel.
Ammonia production requires hydrogen from a hydrocarbon source.
In both cases, it takes energy to make the hydrogen from these compounds.
"We can now produce hydrogen from every kind of agricultural waste, from cornstalk to wood chips.
Still, Europe and the United States approach hydrogen from fundamentally different perspectives.
A reformulator extracts hydrogen from those fuels, but those vehicles emit some greenhouse gases.
But liberating hydrogen from fossil fuels creates carbon emissions that outweigh any environmental advantages.
(One novel possibility: advances in genetic science might yield biological production of hydrogen from microbes).
Most hydrogen cells extract hydrogen from hydrocarbons like gasoline, natural gas or methane.
Suppose that a utility sets up an electrolysis plant to separate hydrogen from oxygen.
