FUEL CELL ELEMENT ELECTRODE

摘要

PROBLEM TO BE SOLVED: To provide an electrode which operates in a very low current density and in a state of maximum concentration polarity.

SOLUTION: The electrode for fuel cell element (120, 130) includes: a hydrophobic graphite support layer (102); a half-hydrophobic electrocatalyst layer (104) which contains an electrocatalyst active material in the carbon substrate and a polytetrafluoro-ethylene (PTFE) portion having a first concentration; and a hydrophilic electrocatalyst layer (106) which contains the electrocatalyst active material in the carbon substrate and has the PTFE portion having a second concentration lower than the first concentration.

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