为了改善Ti基贮氢合金的电化学性能,采用XRD,SEM及EDS分析了Ti0.3Zr0.225V0.25Mn0.3-xNi0.45+x(x=0, 0.05, 0.10, 0.15, 0.20, 0.25)贮氢合金的相结构及相成分,并研究了合金的电化学性能.结果表明,合金均由六方结构的C14型Laves主相和立方结构的C15型Laves第二相构成;随着Ni替代量x的增大,合金的活化性能降低,而循环稳定性得到一定程度的改善.当Ni替代量x＝0.05时,合金的放电容量达到最大,为426 mAh/g,显示出很大的应用潜力.
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