【摘要】 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。更多还原

【Abstract】 The influence of partial substitution of Cr for V on the activation of TiMn based hydride electrodes has been investigated. The results indicate that the partial substitution of Cr for V is favourable for increasing the activation of TiMn based alloys. High discharge capacity (397mAh/g) can be obtained for 1 at% Cr content However, with increasing Cr content. the activation and discharge capacity of the alloy decrease. X ray results indicate that there are two main phases existing in the alloy:V rich V 3Ni 2 and Ti rich TiMn 2.更多还原