用熔炼-快淬工艺制备La15Fe77-xNixMn5 B3(x=55,60,65,70,75)储氢电极合金.采用XRD、SEM、EDS及电化学方法研究合金的组织结构、放氢平台特性和电化学性能.研究结果表明,La15Fe77-xNixMn5B3(x=55,60,65,70,75)合金均为多相结构,主相是LaNi5相,另外还有(Fe,Ni)相和La3Ni13B2相.随Ni含量增加,合金电极的最大放电容量逐渐增加,活化次数明显减少,放氢平台特性变好,高倍率放电性能明显改善.
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