NEGATIVE ELECTRODE FOR ALKALINE STORAGE BATTERY, AND ALKALINE STORAGE BATTERY

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PROBLEM TO BE SOLVED : To improve a negative electrode used for an alkaline storage battery and make it possible to obtain an alkaline storage battery which has high capacity and is excellent in discharge charactaristic especially at low temperatures, and excellent in cycle life. SOLUTION : In negative electrode of an alkaline battery, hydrogen storage alloy which is expressed as a general formula Ln1-xMgxNiy-a-bAlaMb(in the formula, Ln is an element of one kind selected at least from rare-earth element including Y and Zr, M is an element of at least one kind selected from V, Nb, Ta, Cr, Mo, Mn, Fe, Co, Ga, Zn, Sn, In, Cu, Si, P, B, and Ti, x, y, a, and b satisfy conditions of 0.05≤x≤0.25, 3.1≤y≤3.6, 0.01≤a+b≤0.30) and in which Vickers hardness by JIS Z2244 is 650 Hv or less, and a rubber based binder are made to be contained. COPYRIGHT : (C)2008, JPO&INPIT