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    • 4. 发明公开
    • HYDROGEN-ABSORBING ALLOY AND NICKEL-HYDROGEN STORAGE BATTERY
    • WASSERSTOFFABSORBIERENDE LEGIERUNG UND NICKEL-WASSERSTOFF-SPEICHERBATTERIE
    • EP2381514A4
    • 2017-05-24
    • EP10733487
    • 2010-01-20
    • GS YUASA INT LTD
    • KANEMOTO MANABUOZAKI TETSUYAWATADA MASAHARU
    • H01M4/38C01B3/00C22C1/02C22C19/00C22C19/03C22F1/10H01M10/34
    • C22C19/03B22F2998/00C01B3/0031C01B3/0057C22C1/02C22C19/00C22C19/007C22F1/10H01M4/383H01M10/345Y02E60/124Y02E60/327C22C1/0433
    • The present invention aims to increase the discharge capacity and to improve the cycle life performance in a nickel-metal hydride rechargeable battery using a La-Mg-Ni based hydrogen-absorbing alloy as an active material of a negative electrode. The present invention provides a hydrogen-absorbing alloy represented by the general formula (1): Ml u Mg v Ca w M2 x Ni y M3 z ...(1) (wherein, M1 is one or more elements selected from rare earth elements; M2 is one or more elements selected from the group consisting of Group 3A elements, Group 4A elements, Group 5A elements, and Pd (excluding rare earth elements); M3 is one or more elements selected from the group consisting of Group 6A elements, Group 7A elements, Group 8 elements, Group 1B elements, Group 2B elements, and Group 3B elements (excluding Ni and Pd); u, v, w, x, y, and z are numbers satisfying, u + v + w + x + y + z = 100, 3.4 ‰¤ v ‰¤ 5.9, 0.8 ‰¤ w ‰¤ 3.1, 0 ‰¤ (x+z) ‰¤ 5, and 3.2 ‰¤ (y+z)/(u+v+w+x) ‰¤ 3.4), and a nickel-metal hydride rechargeable battery including a negative electrode containing the hydrogen-absorbing alloy.
    • 本发明的目的在于提高使用La-Mg-Ni基吸氢合金作为负极活性材料的镍 - 金属氢化物可充电电池中的放电容量并提高循环寿命性能。 本发明提供了由通式(1)表示的吸氢合金:M 1 u Mg v Ca w M2 x Ni y M3 z ...(1)(其中,M1是选自稀土元素 M2是选自3A族元素,4A族元素,5A族元素和Pd(稀土元素除外)中的一种或多种元素; M3是选自6A族元素, 第7A族元素,第8族元素,第1B族元素,第2B族元素和第3B族元素(不包括Ni和Pd); u,v,w,x,y和z是满足的数字,u + v + w + x + y + z = 100,3.4‰v‰5.9,0.8‰w¤3.1,0‰(x + z)‰5和3.2‰(y + z)/(u + v + (w + x)≤3.4)以及包括含有吸氢合金的负极的镍氢可充电电池。