探讨了 Cr部分取代 V对 Ti Mn基贮氢电极合金活化性能的影响 ,并对合金电极的微观组织进行了分析和讨论。结果表明 ,Cr部分取代 V能够提高 Ti Mn基合金的活化性能 ,当 Cr含量为 0 .0 1时 ,获得了 397m Ah/g的放电容量。但随着 Cr含量的提高 ,合金的电化学容量及活化性能反而有所下降。只有加入适量的 Cr,才能使得合金的电化学容量和活化性能达到最佳。XRD分析表明 ,该合金有两个主相 :富 V的 V3Ni2 相和富 Ti的 Ti Mn2 相。 The effect of Cr partial substitution of V on the activation properties of Ti-Mn-based hydrogen storage electrode alloys was discussed. The microstructure of the alloy electrodes was also analyzed and discussed. The results show that the partial substitution of Cr for Cr can improve the activation of Ti-Mn-based alloys. When Cr content is 0.01, a discharge capacity of 397m Ah / g is obtained. However, with the increase of Cr content, the electrochemical capacity and activation properties of the alloy decreased. Only by adding an appropriate amount of Cr, can make the alloy’s electrochemical capacity and activation performance to achieve the best. XRD analysis shows that the alloy has two main phases: V-rich V3Ni2 phase and Ti-rich TiMn2 phase.