| 摘要 |
PURPOSE:To simplify manufacture of a sodium-sulfur battery and enhance its safety by installing inside a solid electrolyte tube a case having an Na path extending up to near the bottom lid, and installing metallic fiber sintered bodies arranged in specified form in the space formed between the case and the electrolyte tube. CONSTITUTION:A case 10 which is made of a melting resistant Na metal and has an Na path penetrating the center of an upper lid 11 and extending up to near the bottom lid, is provided inside the Na-ion conducting bottomed solid electrolyte tube 1 of an Na-S battery the negative chamber of which consists of the internal space of the tube 1. Next, metallic fiber sintered bodies 13 which are continuous in the horizontal direction and spaced at equal intervals in the vertical direction, are installed in the space formed between the case 10 and the tube 1. After that, a gasified matter is packed in the case 10, and a sulfur-holding formed positive conductive member 5 is inserted in a battery case 3. In this battery, even when a crack develops in the sintered body 13 and its upper adjacent sintered body 13 is consumed by directly reacting with sulfur in the worst case thereby securing safety. |
