POWER GENERATION DEVICE INCLUDING OXYGEN DEPOLARIZATION ELECTRODE

摘要

PURPOSE:To prevent any increase in the electric resistance of an oxygen depolarization electrode or the internal resistance of a power generation device including said electrode by making a cation exchanger in contact with the electrolyte- side surface of the positive body. CONSTITUTION:A positive body 11 consists of active carbon carrying a manganese oxide and is packed in a nickel-plated stainless screen used as the current collector. A porous film 10 made of an ion exchanger is made in contact with the positive body 11. Due to the above structure, even when carbon dioxide dissolves in the liquid electrolyte and as the result carbonate ions are produced, the cation exchanger 10 which is in contact with the electrolyte-side surface of the positive body 11 adsorbs carbonate ions which results in minimal production of carbonates. Consequently, it is possible to prevent any increase in the electric resistance of the oxygen depolarization electrode or the internal resistance of the power generation device.