Solid polymer fuel cell

Details Solid polymer fuel cell Solid polymer fuel cell

H - Electricity

01

M

H01M 8/00 (2006.01) H01M 4/86 (2006.01) H01M 4/94 (2006.01) H01M 4/96 (2006.01) H01M 8/10 (2006.01) H01M 4/92 (2006.01)

Patent

CA 2357590

A solid polymer fuel cell includes an electrolyte membrane having a polymer ion-exchange component, and an air electrode and a fuel electrode between which the electrolyte membrane is sandwiched. Each of the air electrode and the fuel electrode can be formed of a polymer ion-exchange component and a plurality of catalyst particles including a catalyst metal carried on surfaces of carbon black particles, and includes no third component. When a moistening for maintaining the electrolyte membrane in a wet state is carried out from both of the side of the air electrode and the side of the fuel electrode, the carbon black particles have a water-repellent property such that an amount A of water adsorbed under a saturated steam pressure at 60°C is equal to or smaller than 80 cc/g, and a ratio Wp/Wc of a weight Wp of polymer ion-exchange component incorporated to a weight Wc of carbon black particles incorporated is set in a range of 0.4<=Wp/Wc<=1.25.

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