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Osaka Gas’ residential polymer electrolyte fuel cell (PEFC) cogeneration system
About the polymer processing electrolyte cell(PEFC) cogeneration system

Principle of PEFC power generation

A polymer electrolyte fuel cell consists of a basic unit integrated into a fuel electrode (anode), a solid polymer membrane (electrolyte), and an air electrode (cathode).

Chemical reaction formula for a fuel cell
Flow of power generation in the polymer electrolyte fuel cell (PEFC)
  • Hydrogen (H2) divides into electrons (e-) and hydrogen ions (H+).
  • Electrons separated from the hydrogen move to the air electrode along an external circuit. This movement of electrons forms a current.
  • Hydrogen ions (H+) move toward the air electrode in the electrolyte membrane that separates the fuel electrode from the air electrode.
  • Electrons and hydrogen ions reach the air electrode via paths 2 and 3, reacting with oxygen to produce water.

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