| 摘要 |
PROBLEM TO BE SOLVED: To provide an alkaline battery of high performance and safety with a separator of improved discharge characteristics and high capacity of separating the positive and negative electrodes. SOLUTION: A separator for separating the positive electrode material and negative electrode gel of an alkaline battery consists of; (A) two more layers of an unwoven fabric that has air permeability of 6×103-1.0×104 ml/(min.cm2), or (B) two or more layers of an unwoven fablic of whole porous volume of 0.8-2.0 cm2/g measured by pressurized mercury injection. In this case, the air permeability is defined as the amount of air with a temperature of 20±2 deg.C and humidity of 65±2% having passed at a pressure difference of 100 mmH2O. This enhances the electric discharge characteristics as well as the capacity for separating the two electrodes, thus increasing durability. |
