| 摘要 |
PURPOSE:To reduce voltage drop in the initial stage of high rate discharge by forming a negative electrode comprising lithium of nonaqueous solvent battery by covering at least part of the surface of the negative electrode with polyethylene oxide. CONSTITUTION:A cylindrical negative electrode 2 comprising metallic lithium whose surface is covered with polyethylene oxide is pressed against the inner surface of container 1 which also serves as a negative terminal, and a positive electrode 5 comprising a carbon porous layer 4 which is pressed against a current collector 3 made of stainless steel net is arranged with separators 61, 62 comprising glass nonwoven fabric interposed between the negative electrode 2 and the positive electrode 5. An electrolyte 13 mainly comprising sulfur oxyhalide which also serves as positive active material is pored into the container 1 for forming a nonaqueous solvent battery. By properly specifying the film thickness of polyethylene oxide, voltage drop in the initial stage of discharge is reduced, and the recovery time of voltage is shortened without increase in internal resistance. |
