Hydrogen-absorbing alloy for battery and secondary nickel-metal hydride
battery
    10.
    发明授权
    Hydrogen-absorbing alloy for battery and secondary nickel-metal hydride battery 失效
    用于电池和二次镍氢电池的吸氢合金

    公开(公告)号:US5753386A

    公开(公告)日:1998-05-19

    申请号:US721057

    申请日:1996-09-26

    IPC分类号: H01M4/38 H01M10/34

    CPC分类号: H01M4/383 H01M10/345

    摘要: There is provided a hydrogen-absorbing alloy for battery comprising a rapidly-quenched alloy having the composition represented by a general formula ANi.sub.a M.sub.b M'.sub.c T.sub.d (where, A is composed of La, Ce, Pr, Nd and Y, an amount of La content in A is 50-99 wt %, an amount of Ce content is 1-30 wt %, an amount of Pr content is 0-10 wt %, an amount of Nd content is 0-10 wt % and an amount of Y content is 0-10 wt %; M is at least one element selected from Co, Fe and Cu; M' is at least one element selected from Mn and Al; T is at least one element selected from B, Si, S, Cr, Ga, Ge, Mo, Ru, Rh, Pd, Ag, In, Sn, Sb, Bi, P, V, Nb, Ta and W; and a, b, c and d are atomic ratios and satisfy 3.2.ltoreq.a.ltoreq.4.0, 0.4.ltoreq.b.ltoreq.1.0, 0.3.ltoreq.c.ltoreq.0.8, 0.ltoreq.d.ltoreq.0.2, 4.9.ltoreq.a+b+c+d.ltoreq.5.4), characterized in that a hydrogen equilibrium pressure when the number of hydrogen atoms absorbed by one atom of the alloy at a temperature of 60.degree. C. is 0.4 is 0.05-0.6 atm. With the above arrangement, a hydrogen-absorbing alloy capable of realizing a small decrease in capacity under the low-temperature area and high-temperature area, a large electrode capacity in a wide temperature range, and a long life, and a secondary nickel-metal hydride battery using this alloy can be obtained.

    摘要翻译: 提供一种电池用吸氢合金,其特征在于,具有由通式ANiaMbM'cTd(其中,A由La,Ce,Pr,Nd和Y构成的组成)的快淬合金, A为50〜99重量%,Ce含量为1-30重量%,Pr含量为0〜10重量%,Nd含量为0〜10重量%,Y含量为 0〜10重量%; M为选自Co,Fe和Cu中的至少一种元素; M'为选自Mn和Al中的至少一种元素; T为选自B,Si,S,Cr,Ga中的至少一种元素 ,Ge,Mo,Ru,Rh,Pd,Ag,In,Sn,Sb,Bi,P,V,Nb,Ta和W; a,b,c和d为原子比,满足3.2 < /=4.0,0.4