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研究了用Ｃｕ部分取代非晶态Ｍｇ５０Ｎｉ５０合金中的Ｎｉ后对其电化学性能的影响。结果表明，Ｃｕ置换部分Ｎｉ后，合金电极的电化学容量有所降低，但循环工作寿命有所提高。对氧化物电极的电极电位分析表明，Ｎｉ在循环过程中可被部分氧化，而Ｃｕ保持金属态。用Ｃｕ置换部分Ｎｉ后，循环过程中合金粒子间导电性提高，对吸放氢过程具有催化作用的金属态Ｎｉ、Ｃｕ总量增加，故循环稳定性增加。但由于Ｎｉ对吸放氢过程的催化作用高于Ｃｕ，置换后合金初始容量（即最大容量）稍有降低。
The effect of partial substitution of Cu on the electrochemical properties of Ni in amorphous Mg50Ni50 alloy was studied. The results show that the electrochemical capacity of the alloy electrode is reduced after the replacement of part of Ni by Cu, but the cycle life is improved. Electrode potential analysis of the oxide electrode shows that Ni can be partially oxidized during cycling while Cu remains metallic. After replacing part of Ni with Cu, the electrical conductivity between the alloy particles increases during cycling, and the total amount of metallic Ni and Cu having a catalytic effect on the hydrogen absorption and desorption process increases, so the cycle stability increases. However, since the catalytic effect of Ni on the hydrogen absorption and desorption process is higher than that of Cu, the initial capacity (ie, maximum capacity) of the alloy after substitution is slightly decreased.