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本文研究了Ｖ０．９１－ｘ－ｙＴｉｘＭｙＮｉ０．０９（Ｍ＝Ｃｒ，Ｓｉ，Ｚｒ，Ｚｒ＋Ｃｒ，ｘ＝０．１８～０．５５，ｙ＝０～０．０９）系贮氢合金的相组成和电化学性能。结果表明，Ｖ０．９１－ｘＴｉｘＮｉ０．０９（ｘ＝０．１８～０．５５）合金系在吸氢时形成二种氢化物即单氢化物及双氢化物，但在通常放电条件下（截止电位为－０．７Ｖ）只能双氢化物放电，如果通过提高放电截止电位强制单氢化物放电，则合金中的Ｖ容易发生氧化。这样做虽然初始容量很高，却导致电极的循环寿命下降。分别用９％的Ｚｒ，Ｃｒ，Ｓｉ部分替代Ｖ０．９１－ｘ－ｙＴｉｘＭｙＮｉ０．０９合金中的Ｖ，导致合金的循环寿命变差，同时也使容量下降，三种元素对容量影响的次序为Ｓｉ＞Ｃｒ＞Ｚｒ。但同时用Ｚｒ、Ｃｒ替代Ｖ却可提高合金的电化学容量，Ｖ０．６４Ｔｉ０．１８Ｚｒ０．０４５Ｃｒ０．０４５Ｎｉ０．０９容量达到４２０ｍＡｈ／ｇ。
In this paper, the phase composition and electrical properties of V0.91-x-yTixMyNi0.09 (M = Cr, Si, Zr, Zr + Cr, x = 0.18 ~ 0.55, y = 0 ~ 0.09) Chemical properties. The results show that V0.91-xTixNi0.09 (x = 0.18-0.55) alloys form two kinds of hydrides, namely monohydride and hydride, when hydrogen is absorbed, but under the normal discharge conditions -0.7V) only hydride discharge, if by increasing the discharge cut-off potential forced discharge of a single hydride, the alloy V is prone to oxidation. Although this initial capacity is high, it leads to a decrease in the cycle life of the electrode. The partial substitution of 9% Zr, Cr and Si for V in V0.91-x-yTixMyNi0.09 alloy resulted in the deterioration of the cycle life of the alloy and the decrease of the capacity. The order of influence of the three elements on the capacity was Si > Cr> Zr. But at the same time with Zr, Cr instead of V but can improve the electrochemical capacity of the alloy, V0.64Ti0.18Zr0.045Cr0.045Ni0.09 capacity of 420mAh / g.