fuel cell

noun

1. a device that produces a continuous electric current directly from the oxidation of a fuel, as that of hydrogen by oxygen.

fuel cell

noun

1. a cell in which the energy produced by oxidation of a fuel is converted directly into electrical energy

fuel cell

1. A device that produces electricity by combining a fuel, usually hydrogen, with oxygen. In this reaction, electrons are freed from the hydrogen in the fuel cell by a catalyst, and gain energy from the chemical reaction binding hydrogen and oxygen; this provides a source for electric current. The exhaust of hydrogen fuel cells consists simply of water. Fuel cells are currently used in spacecraft, and increasingly in ground transportation, with potential use everywhere electricity is required.

fuel cell

1. An electrochemical device where a chemical reaction produces energy that is converted directly into electricity. Once used primarily in space travel, fuel cells are now being considered for use in cars. Unlike internal-combustion engines, fuel cells do not pollute the environment.

Word History and Origins

Origin of fuel cell¹

First recorded in 1920–25

Example Sentences

Companies like Bloom Energy, Liberty Energy, and Pro Petro are repurposing existing technologies or offering fuel cells to provide quick, localized power for data centers.

Read more on Barron's

Makers of small turbines and fuel cells are seeing surging investor interest.

Read more on The Wall Street Journal

Investors in turn are bidding up stocks in makers of everything from small turbines to fuel cells, sometimes to euphoric levels.

Read more on The Wall Street Journal

However, Brouwer said he also would have liked to see an alternative plan that used hydrogen fuel cells — a more expensive option that would not produce NOx emissions.

Read more on Los Angeles Times

The fuel cell company lost 10 cents a share under standard accounting metrics, but adjusted profit of 15 cents a share beat analysts’ expectations for 10 cents a share.

Read more on Barron's