研究了Ce含量对AB5型贮氢合金Ml(NiCoAlMn)5的结构、组织、电化学性能和P-C-T特性的影响。结果表明：随着Ce含量的增加，合金的点阵常数a，c，轴比c/a和单胞体积均随之减小，枝晶偏析比增大，放电容量降低，平台压升高，充放电循环稳定性提高，变化规律是先增后降；在Ce含量15at%(占A侧)时合金获得最佳的电化学综合性能，初始放电容量只略有降低，而充放电循环稳定性明显改善。
Effect of cerium content on phase structure, electroch emicalproperties and pressure-concentration-temperature (P-C-T) charact eristics of Ml(NiCoAlMn)5 alloy (Ml=Michmetal) has been investigated. Experimental results indicate that as cerium content increases, the lattice constants （a,c), cell volume (V) and axis ration (c/a) of the alloy decrease; the elemental segregation in dendrite increases; the discharge capacity decreases; the cycling stability increases; the plateau pressure of P-C-T curve incre ases. The alloy with 15 at% Ce has optimum comprehensive electrochemical properties.
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