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中文摘要：
利用高频感应熔炉制备摩尔比率为75%La（Ni0.85Co0.15）5-x（Mn0.4Al0.3）x＋12.5%Mg2Ni（x=0, 0.3,0.6）合金,测试合金的储氢性能,分析Mn、Al元素组合对合金储氢性能的影响.结果发现,合金均由多相组成,其中主相分别是CaCu5型的LaNi5相和PuNi3型的（La,Mg）Ni3相.随着元素（Mn,Al）含量增大,合金电极的循环稳定性有一定的改善,80次循环放电容量保持率从x=0时的59.1%提高到x=0.6时的74.5%.
英文摘要：
The 75%La（Ni0.85Co0.15）5-x（Mn0.4Al0.3）x＋12.5%Mg2Ni（x=0,0.3,0.6）alloys were prepared by high frequency induction furnace and their hydrogen-storage characteristics were tested systematically.The result showed that the alloys consist of multi-phases,and the main phases were LaNi5 phase with a hexagonal CaCu5-type structure and LaNi3 phase with PuNi3-type structure,and the stability of charging-discharging cycle was improved as the content of metals（Mn,Al）increased.The discharge capacity retention after 80 charging-discharging cycles increased from 59.1%（x=0）to 74.5%（x=0.6）.
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