| 摘要 |
PURPOSE:To cause no deficiency of the electrolyte of a negative electrode even in case of eventual leakage of an electrolytic liquid from the negative electrode to an air supply system while making the electrolytic liquid hard to leak by giving a material having an ion exchange radical equal to that of the electrolyte to a catalytic layer of the negative electrode as well as to the boundary face between the catalytic layer and the electrolytic layer. CONSTITUTION:A negative electrode 3 is formed of a porous electrode basic body 31 and a catalytic layer 32 attached to it. Then, the negative electrode 3 is impregnated with a high-molecular electrolyte having a sulphonic acid radical or the impregnated negative electrode is further fired while giving the electrolyte, which does not spring out from the negative electrode. Polyethylene sulphonic acid, polystylene sulphonic acid, polystylene, divinyl benzene sulphonic acid and further an electrolyte, in which a sulphonic acid radial is given to a fluoro resin base, are used for the high-molecular electrolyte having the sulphonic acid radical. Thereby, a negative electrode made of gelatinized high-molecular acid is arranged to lie between the electrolytic layers for giving the electrolyte and simultaneously having an effect as a holding layer of the electrolytic liquid, thus enabling a cell to maintain high performance and a stable characteristic for a long time. |
