| 摘要 |
PURPOSE:To enhance the heavy-load discharge characteristic of an air electrode by preparing an oxygen-gas permselective film containing a perfluoro compound or the like having a great oxygen-absorbing ability, and making the above film to be in contact with an electrode body. CONSTITUTION:A resin which forms an oxygen-gas permselective film, such as polysiloxane, is dissolved into an organic solvent to prepare a solution. Thus prepared solution is added with at least one compound of a perfluoro compound such as perfluoro decalin which has a selective oxygen-adsorbing ability, a metal phthalocyanine such as cobalt phthalocyanine, and a metal porphyrin such as cobalt porphyrin so as to make a solution. An oxygen-gas permselective film is formed by spreading thus made solution before the solvent is evaporated. Then, it is pressed and attached upon an electrode body which is prepared from a porous active metal, such as a silver filter, thus an air electrode is obtained. When thus obtained air electrode is used for a hydrogen/oxygen fuel cell, a metal/air battery or the like, the heavy-load discharge of the battery is enhanced, and the liquid leakage resistance of the battery is increased. |
