| 摘要 |
PURPOSE:To selectively absorb oxygen in air and prevent the intrusion of water vapor and carbon dioxide gas to maintain battery high performance for a long time, by using cross-linked fluorosilicone for a water repellent layer forming the air electrode of a metallic air battery. CONSTITUTION:A metallic air battery, in which oxygen in air is used as an oxidant, is formed of an air chamber 1, air electrodes 2, 3, and 4 composed of three layers, an electrolyte chamber 5 filled with an electrolyte, and an anode 6. The air electrodes are composed of a water repellent layer 2 for preventing the leakage of an electrolyte to outside and passing air to a catalyst layer; an Ni mesh layer 3 in order to become a collector and to hold strength; and a catalyst layer 4 including a catalyst. The layer 2 is formed by cross- linking fluorosilicone polymer having a vinyl group, by silicone having silicone- hydrogen atomic bonding. Fluorosilicone has excellent oxygen-permeability and low permeability for water vapor and carbon dioxide gas. Consequently, a metallic air battery having high performance for a long time can be provided. |
