| 摘要 |
PURPOSE:To increase the electrolyte absorption quantity of an air pole, and check a potential drop with a variation in electrolyte volume in an air pole catalytic layer in continuous discharge of a cell as well as to aim at the promotion of long service life in the cell, by adding a hydrophilic agent to the air pole catalytic layer. CONSTITUTION:A methanol fuel cell is provided with air poles (an air pole substrate 10 and an air pole catalytic layer 11), and methanol poles (a methanol pole substrate 14 and a methanol pole catalytic layer 13 via an ion-exchange film 12, and the atmosphere is led into an air chamber 9, while H2SO4-CH3H- water are fed to a methanol pole chamber 15. A mixture of an electrode catalyz er bearing Pt on a furnace black having carbon powder and polytetrafluoroethylene or a water-repellent agent is applied onto a conductive porous substrate and burned, thereby forming the catalytic layer 11 to which SiC is added as a hydrophilic member. |
