Operating principle of the fuel cell © Siemens Stiftung 2020 CC BY-SA 4.0 international

Operating principle of the fuel cell


Information module:
Operating principle of the fuel cell. It is the ideal source of electric power if hydrogen becomes established as a renewable energy source.

English, German, Spanish (CREA)
Interactive (948.3 kByte)
In fuels cells, hydrogen “burns“ with oxygen to form water. The hydrogen and oxygen molecules are ionized at catalytically activated electrodes. In the process hydrogen loses electrons which are taken up by oxygen. The information module shows this “original principle" of the fuel cell and explains (graphically and in the form of an animation) a modern membrane fuel cell with polymer membrane, a so-called PEM fuel cell. Its use in power plants is presented. In this application solid oxide fuel cells (SOFC) are generally used. The parameters of PEM and SOFC fuel cells are compared.

Information and ideas:
Fuels cells are also used in combination with gas turbines in power plants.
There are no other media directly related to this file.
Information sheet
Chemistry; Physics; Technology
Grade 7 to 9; Grade 10 to 13
Middle/high school; Vocational training
Chemical reduction; Energy; Energy supply; Future; Hydrogen; Power generation; Renewable energy; Technology; Electric power generation; Energy conversion; Energy store; Fuel cell; Hydrogen technologies; Redox reaction; Renewable energy; Technology of the future
Siemens Stiftung Media Portal
MediaHouse GmbH
© Siemens Stiftung 2020
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