| 摘要 |
PURPOSE:To attain both ensuring strength of a solid high molecular electrolytic film and improving ionic conductivity. CONSTITUTION:A cell of a fuel cell is provided with an electrolytic film 10 and positive and negative electrodes 20, 30 on both sides of this electrolytic film. The positive and negative electrodes 20, 30 are constituted of a gas diffusion electrode part 22 and a catalytic reaction layer 24. The electrolytic film 10 is a compound film of 100mum film thickness formed by connecting cation exchange films 12, 14 prepared from fluorine sulfonic high molecular resin to have a sulfon group as an ion exchange group. In the cation exchange films 12, 14, a value of ion exchange group equivalent weight(EW), which is film weight per 1mol ion exchange group (in this case, sulfon group), is different, to provide the value of EW 900 in the cation exchange film 12 and the value of EW 1100 in the cation exchange film 14. |
