| 摘要 |
PROBLEM TO BE SOLVED: To provide an alkaline battery that has an electrode plate structure, in which the utilization ratio of active material does not decrease, even if the filling density of the active material is increased and that the cycle characteristic, and to improve discharge capacity. SOLUTION: A positive electrode is composed of two sheets of electrode plates 11, 11, having a liquid-holding member 14 made of woven or unwoven cloth in-between. A negative electrode is composed of two hydrogen-storing alloy negative electrode plates 13, 13 connected by a joining portion 13a. A separator 16 is placed between these positive and negative electrode, and then the joining portion 13a of the two hydrogen-storing alloy negative electrode plate 13, 13 is folded back and made into a laminated structure. These laminated structures are piled in layers and made into an electrode plate group 10a. The alkaline battery comprises this electrode plate group 10a in a rectangular outer package can. Thereby, an electrolyte is immersed inside the positive electrode plate 11, 11 and promotes charging and discharging reactions in the positive electrode plate 11, 11, so that the utilization ratio of the active material is improved, and discharging capacity is increased.
|
