What Are Hydrogen Cars?

October 19, 2021

Cars that run on hydrogen are called fuel-cell vehicles. They are electric vehicles that get their energy from a fuel-cell stack rather than a battery pack.

In current automotive uses, a fuel-cell stack is a suitcase-sized box that’s fed a mixture of hydrogen held in an onboard tank and oxygen from the air to create electricity through a chemical reaction. According to the Environmental and Energy Study Institute, “A fuel cell is, in a way, a battery that can be refueled (as opposed to recharged).” In today’s cars, that refueling can be accomplished in only about five minutes through a process similar to refueling a gas-only vehicle, whereas recharging a battery would take far longer.

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