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贮氢合金Zr（Mnl－xNix）2（0.40≤x≤0．75）的多相Rietveld分析表明，它是以C15型Laves相ZrM2为主的多相体系、不同M／Zr原子比（M=Nix或Mnl-x）非Laves相合金的出现与丰度和整个合金成分配比中Ni／Zr原子比的变化一致，并与Ni－Zr相图中具有同样Ni／Zr原子比的金属间化合物有相同的晶型．x＝0．75，Zr7M10的丰度是38.57％;x＝0.55，C15Laves相的最大丰度达85.98％，电化学放电容量也达最大值242mAh／g;≥0.55，C14型Laves相丰度在2％左右；x＜0．55；C14型Laves相丰度随Mn取代量的增加而增加；x＝0．40，丰度是26.38％．取代量x的增减引起每个原子的平均价电子数的变化可以解释C15Laves相出现同丰度的变化
The multiphase Rietveld analysis of the hydrogen storage alloy Zr (Mnl-xNix) 2 (0.40≤x≤0.75) showed that it is a heterogeneous system mainly composed of C15-type Laves phase ZrM2 with different M / Zr atomic ratios (M = Nix or Mnl-x) non-Laves phase alloy is consistent with the change of the atomic ratio of Ni / Zr in the composition of the entire alloy and is similar to that of the intermetallic compound with the same Ni / Zr atomic ratio in the Ni-Zr phase diagram Have the same crystal form. x = 0.75, the abundance of Zr7M10 is 38.57%; x = 0.55, the maximum abundance of C15Laves phase reaches 85.98% and the electrochemical discharge capacity reaches the maximum of 242mAh / g; ≥0.55, 2%, x <0.55. The Laves phase abundance of C14 increased with the increase of Mn substitution; x = 0.40, and the abundance was 26.38%. The change of the average valence number of each atom caused by the increase or decrease of the substitution amount x can explain the same abundance change of C15Laves