| 摘要 |
PROBLEM TO BE SOLVED: To provide: an alkaline storage battery improved in initial output characteristics, capable of suppressing deterioration in output characteristics after endurance use, and excellent in continuous charge characteristics; and an alkaline storage battery system including the alkaline storage battery.SOLUTION: An alkaline storage battery includes an electrode group together with an alkaline electrolyte in an outer packaging can, the electrode group including: a nickel positive electrode including nickel hydroxide as a main positive electrode active material; a hydrogen absorbing alloy negative electrode including a hydrogen absorbing alloy as a main negative electrode active material; and a separator separating the nickel positive electrode and the hydrogen absorbing alloy negative electrode. The hydrogen absorbing alloy is represented by general formula: LnMgNiAlM(in the formula, Ln represents at least one element selected from Y or the like, M represents at least one element selected from V or the like, and 0.05≤x≤0.30, 0.05≤a≤0.30, 0≤b≤0.50 and 2.8≤y≤3.9 are satisfied), and tungsten (W) is solid-solved in the nickel positive electrode. |
