A fuel cell is an electrochemical cell that converts the chemical energy of a fuel (often hydrogen) and an oxidizing agent (often oxygen) into electricity through a pair of redox reactions. Fuel cells are different from most batteries in requiring a continuous source of fuel and oxygen (usually from air) to sustain the chemical reaction, whereas in a battery the chemical energy usually comes from metals and their ions or oxides[3] that are commonly already present in the battery, except in flow batteries. Fuel cells can produce electricity continuously for as long as fuel and oxygen are supplied.
invented by Frederick Ransome
A rotary kiln is a pyroprocessing device used to raise materials to a high…
invented by Léon Bouly
Cinematograph or Kinematograph is an early term for several types of motion…
invented by Joseph Henry
A relay is an electrically operated switch. It consists of a set of input…
invented by Fyodor Pirotsky
A tram (also known as a streetcar or trolley in North America) is a train that…
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