Solid polymer type fuel cell and method for manufacturing the same
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United States of America Patent
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May 9, 2000
Grant Date -
N/A
app pub date -
Apr 8, 1998
filing date -
Apr 22, 1997
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Expired
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Abstract
An electrode of solid polymer electrolyte fuel cells is produced by a step of preparing a mixed liquid containing an organic solvent, a noble metal catalyst-supporting carbon powder and a colloid of a solid polymer electrolyte having a particle size of from 1 nm to less than 400 nm, the colloid being adsorbed to the carbon powder and a step of forming an electrode by coating the mixed liquid on one side of a gas-diffusible layer. The solid polymer electrolyte is effectively adsorbed to the surface of the catalyst and thus a wide reaction area can be secured. Furthermore, thickness of the solid polymer electrolyte layer can be controlled to one in which hydrogen and oxygen can be easily diffused.
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