HIGH POLYMER ELECTROLYTE FUEL CELL

摘要

PROBLEM TO BE SOLVED: To promote water removal from a diffusion layer of a cell, and prevent lowering of cell performance due to excessive wetting of the diffusion layer during a long-time operation or in large-current cell output by providing a diffusion layer of an electrode which has conductive material to which a silane compound having water repellency is chemically bonded. SOLUTION: A carbon non-woven fabric electrode 5 subjected to water repellent finish is prepared by a silane compound to which a hydrocarbon chain or a fluorocarbon chain is chemically bonded, and an electrode catalyst layer 2 taking designated paste as raw material is formed on one surface thereof to be disposed in the center of a high polymer electrolyte film 1. The high polymer electrolyte film 1 and the carbon non-woven fabric electrode 5 are bonded to the catalyst layer 2 formed of carbon powder carrying platinum and the high polymer electrolyte film 1. The thus obtained bonded body is clamped from both surfaces by carbon-made separators 4 which are impregnated with a phenol resin to inhibit gas permeability.