NEGATIVE ELECTRODE FOR ALKALINE STORAGE BATTERY, AND ALKALINE STORAGE BATTERY

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PROBLEM TO BE SOLVED : To improve a storage property of an alkaline storage battery wherein a fluorocarbon resin is mixed into a negative electrode using Mg-Ni-rare earth based hydrogen occlusion alloy, and to prevent reduction on discharge capacity and discharge voltage when leaving the alkaline storage battery at a charged state. SOLUTION : Hydrogen occlusion alloy represented by a general formula Ln1-XMgXNiy-a-bAlaMb (where Ln is at least an element selected from rare-earth elements including Y, Zr, and Ti, M is at least an element selected from V, Nb, Ta, Cr, Mo, Mn, Fe, Co, Ga, Zn, Sn, In, Cu, Si, P, and B, and conditions of 0.05≤x≤0.30, 0.05≤a≤0.30, 0≤b≤0.50, and 2.8≤y≤3.9 are satisfied) and the fluororesin with an average molecular weight of 1, 000, 000 or less are included in the negative electrode of the alkaline storage battery. COPYRIGHT : (C)2009, JPO&INPIT