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    • 88. 发明授权
    • Hydrogen-absorbing alloy electrode
    • 吸氢合金电极
    • US5441826A
    • 1995-08-15
    • US189172
    • 1994-01-31
    • Hiroshi WatanabeAkio FurukawaShin FujitaniIkuo YonezuTakahiro Isono
    • Hiroshi WatanabeAkio FurukawaShin FujitaniIkuo YonezuTakahiro Isono
    • H01M4/38H01M4/02
    • H01M4/383Y10S420/90
    • Three types of novel hydrogen-absorbing alloy electrodes A, B and C usable for metal hydride secondary batteries are provided. All three types are represented by the general formula AB.sub.x wherein A represents Ti or elements that principally comprise Ti and generate heat upon absorption of hydrogen, B represents Mo and Ni or elements that principally comprise Mo and Ni and absorb heat upon absorption of hydrogen and 0.5.ltoreq.X.ltoreq.2, and are readily producible and difficult to undergo cycle deterioration and need only short activation treatment time. (A) uses a hydrogen-absorbing alloy obtained by quenching and solidifying an alloy melt under an atmosphere of a reducing gas containing hydrogen at a cooling rate of at least 1.times.10.sup.3 .degree. C./sec and having on the surface thereof a hydride layer; (B) uses a hydrogen-absorbing alloy having a composite phase structure comprising a main phase and a subphase, the average areal ratio of said subphase to said main phase in any cross-section of said alloy being 5 to 20%; and (C) uses a hydrogen-absorbing alloy having a composite structure comprising a main phase and subphase, said main phase comprising crystallites having a major axis length (a) of 0.8 to 6 .mu.m and a ratio of the major axis length (a) to minor axis ratio (b), a/b, of not more than 3.
    • 提供了可用于金属氢化物二次电池的三种新型吸氢合金电极A,B和C。 所有三种类型由通式ABx表示,其中A表示Ti或主要包含Ti并且在吸收氢时产生热量的元素,B表示Mo和Ni或主要包含Mo和Ni的元素,并且吸收氢和0.5时吸收热量