A hydrogen fuel cell vehicle (FCEV) is an electric car that makes its own electricity on board by combining hydrogen from a high-pressure tank with oxygen from the air in a fuel cell. The only tailpipe emission is water vapor. FCEVs refuel in about five minutes and offer ranges comparable to gasoline cars. Models such as the Toyota Mirai and Hyundai Nexo have been sold in limited numbers, but very few public hydrogen stations exist outside California, so fuel cell cars remain rare — especially in New York and New Jersey.

How a fuel cell works

  1. Hydrogen enters the fuel cell stack.
  2. A catalyst splits hydrogen into protons and electrons.
  3. Electrons flow through a circuit, producing electricity that drives the motor.
  4. Protons pass through a membrane and combine with oxygen to form water.

A small battery stores energy from braking and helps with acceleration.

Advantages

  • Fast refueling, similar to gasoline.
  • Long range.
  • Zero tailpipe emissions — only water.
  • Quiet, smooth electric drive.

Challenges

  • Infrastructure: few stations, concentrated in California.
  • Hydrogen production: most hydrogen is produced from natural gas; “green” hydrogen from renewable electricity is still limited and costly.
  • Cost: fuel cells and high-pressure tanks are expensive.
  • Efficiency: producing, compressing and transporting hydrogen loses more energy than charging a battery directly.

Where hydrogen may fit

Many experts expect hydrogen to be most useful in heavy trucks, buses, industry and shipping, where batteries are heavy and refueling time matters. Passenger cars have largely moved toward batteries.

Compared with battery EVs

Read hybrid vs plug-in vs electric and the history of electric cars.

Fuel cell cars on the market

  • Toyota Mirai — introduced in 2014 in Japan and redesigned in 2020 as an elegant rear-wheel-drive sedan.
  • Hyundai Nexo — a fuel cell SUV introduced in 2018.
  • Honda Clarity Fuel Cell — offered in California for several years.
  • Honda CR-V e:FCEV — a plug-in fuel cell SUV that can also be charged from the grid.

How refueling works

Drivers attach a nozzle much like a gasoline pump, and hydrogen is transferred at very high pressure — typically 700 bar — in a few minutes. Station reliability and hydrogen supply have been challenges even in California, and several stations have closed at times.

Is hydrogen safe?

Hydrogen tanks are made of carbon-fiber-reinforced composites and are rigorously crash-tested. Hydrogen is flammable, but it is also very light and disperses quickly if released. Fuel cell vehicles meet the same safety standards as other cars.