| 摘要 |
PURPOSE:To increase environmental stability of a battery having an oxygen electrode by placing an oxygen selective permeable membrane in a part on an oxygen electrode side to transmit oxygen which is necessary to a battery reaction and to prevent transmission of water vapor as much as possible. CONSTITUTION:An oxygen selective permeable membrane 4a is bonded with a porous supporter 4 to increase mechaical strength. The permeable membrane is placed on the air entrance side. Polydimethylsiloxane-polyhydroxystyrene copolymer with crosslinking is used as a membrane having large oxygen permeability and small water vapor permeability. The structual formula of this copolymer is shown in the formula. Thereby, the effect of environmental conditions is prevented and durability of a battery is improved. |
