| 摘要 |
PURPOSE:To prevent the deterioration in battery characteristic caused by a long-term overdischarge at a high temperature by using stainless steel containing specific quantities of molybdenum and chromium respectively for a negative electrode current collector. CONSTITUTION:A case 1 concurrently serving as a positive electrode terminal is made of stainless steel, and a sealing plate 2 concurrently serving as a negative electrode terminal is made of the same material. A positive electrode 4 is made of powder of vanadium pentaoxide, acetylene black and fluororesin, a negative electrode 5 is made of a lithium alloy, and aluminum and lithium are melted in the argon atmosphere into an alloy. Steel containing molybdenum 1-3wt.% and chromium 15-18wt.% is used for a negative electrode current collector 6, and it is pressurized integrally with a stainless net. A material with a very high potential is used for a positive electrode active material, and the deterioration of a battery due to the corrosion of the negative electrode current collector can be suppressed at a long-term overdischarge. |
