To provide a fuel cell capable of coping with high-temperature operation, in which a proton conductive film is composed of an electrolytic film, having high heat resistance and proton transfer substance having a high boiling point in place of water.
In an ionic conductive film, which is a film-like member including an organic polymer having carbon in a main skeleton and a three- dimensional crosslinking structure by a metal-oxide bond and has ionic transfer substance within the film, the ionic transfer substance has a dielectric constant of 20 or layer and a boiling point of 150°C or higher. The kind of ions in the ionic conductive film are protons. The film contains therein a proton conductivity imparting agent. The ionic transfer substance is at least one selected from among the group consisting of propylene carbonate, ethylene carbonate and sulfolanes.
NOMURA SHIGEKI
HONMA ITARU
SEKISUI CHEMICAL CO LTD
Yasuo Yasutomi
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