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    • 74. 发明公开
    • PROCESS FOR PRODUCTION OF (RARE EARTH)-Mg-Ni-BASED HYDROGEN STORAGE ALLOY
    • VERFAHREN ZUR HERSTELLUNG EINER WASSERSTOFFSPEICHERNDEN(SELTENERD-)MG-NU-LEGIERUNG
    • EP2589448A1
    • 2013-05-08
    • EP11798266.0
    • 2011-06-24
    • Santoku Corporation
    • OTSUKI TakayukiIRIE Toshio
    • B22F1/00C22C1/00C22C19/00H01M4/38
    • H01M4/383B22F3/10B22F9/04B22F2998/10C01B3/0057C22C1/023C22C1/04C22C1/0441C22C19/00C22C19/007C22C19/03C22F1/10H01M10/345Y02E60/124Y02E60/327Y02P70/54B22F1/0003B22F2009/041B22F1/0085
    • A safe and industrially advantageous production method is disclosed for producing a rare earth-Mg-Ni based hydrogen storage alloy which realizes production of a nickel-hydrogen rechargeable battery having excellent cycle characteristics and a large capacity. The method is for producing a rare earth-Mg-Ni based hydrogen storage alloy including element A, Mg, and element B, wherein element A is composed of at least one element R selected from rare earth elements including Sc and Y, and optionally at least one element selected from Zr, Hf, and Ca, and element B is composed of Ni and optionally at least one element selected from elements other than element A and Mg. The method includes first step of mixing an alloy consisting of elements A and B and Mg metal and/or a Mg-containing alloy having a melting point not higher than the melting point of Mg metal, and second step of heat-treating a mixture obtained from first step for 0.5 to 240 hours at a temperature 5 to 250 °C lower than a melting point of the rare earth-Mg-Ni based hydrogen storage alloy to be obtained.
    • 公开了用于生产稀土-Mg-Ni基储氢合金的安全和工业上有利的生产方法,其实现了具有优异的循环特性和大容量的镍氢可再充电电池的生产。 该方法用于制备包含元素A,Mg和元素B的稀土-Mg-Ni基储氢合金,其中元素A由至少一种选自包括Sc和Y的稀土元素的元素R组成,并且任选地 选自Zr,Hf和Ca中的至少一种元素,元素B由Ni和任选的至少一种选自元素A和Mg以外的元素的元素组成。 该方法包括将由元素A和B组成的合金与Mg金属和/或熔点不高于Mg金属熔点的Mg金属和/或含镁合金混合的第一步骤,以及第二步骤 在比所获得的稀土-Mg-Ni基储氢合金的熔点低5〜250℃的温度下,从第一步骤0.5〜240小时。