To solve a problem that a fuel cell such as a direct type methanol fuel cell becomes unusable in a short time due to oxidation deterioration or desorption of an ion conductive group of an electrolyte membrane and an electrode used in it.
Alkylene-sulphonic acid group and alkylene-sulphoether group are introduced in carbon of aromatic ring of a polyazole system polymer such as polyimidazoles, polyoxazoles, and polythiazoles having superior anti-oxidation deterioration, thereby, an electrolyte, an electrolyte membrane, and a membrane electrode assembly having superior anti-oxidation deterioration performance with an ionic conductivity grant group stable for a long period, with a low cost, can be obtained, and a mobile battery power source, a dispersion battery power source, and a vehicle battery power source become possible to use continuously for a long time.
MORISHIMA SHIN
SOMA KENICHI
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