| 摘要 |
PROBLEM TO BE SOLVED: To provide a high performance fuel cell in which high active catalyst dose not suffer from toxicity caused by CO, by piling a first catalyst layer which is highly durable against CO property and a second catalyst layer which has high catalyst activity on a gas dispersion layer. SOLUTION: By piling a catalyst layer 16 whose carrier particles have high CO-resistant metal and a catalyst layer 17 whose carrier particles have active metal sequentially on porous base material 15 as a gas dispersion layer, an electrode sheet is formed. The electrode sheet is built in a fuel cell such that a catalyst layer 17 which has high catalytic activity to electrolyte is a first layer on the electrolyte side. Catalyst with high catalytic activity is active metal powder such as platinum black powders, platinum alloy powders, or palladium black powders. As high CO-resistant catalyst particles, catalyst such as platinum-ruthenium based catalyst is used. As a gas dispersion layer, carbon paper or water-repellent carbon paper is used. |
