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研究了（Ｔｉ０．７Ｚｒ０．２Ｖ０．１）Ｎｉ合金的相结构和电化学性能。结果表明：在比较快的冷却条件下（真空电弧炉熔化，水冷铜坩埚凝固），合金铸态组织为具有Ｂ２结构（ＣｓＣｌ型）的单一奥氏体相；充氢使Ｂ２结构的奥氏体相转变为单斜结构的马氏体相；反复电化学充放氢使Ｔｉ２Ｎｉ和Ｚｒ９Ｎｉ１１相逐渐从母相中析出。在５０ｍＡ／ｇ放电倍率下，（Ｔｉ０．７Ｚｒ０．２Ｖ０．１）Ｎｉ合金的电化学容量可达３８０ｍＡｈ／ｇ，是ＴｉＮｉ二元合金的两倍。但经１０次充放电循环后合金容量迅速衰退至２００ｍＡｈ／ｇ。研究表明，（Ｔｉ０．７Ｚｒ０．２Ｖ０．１）Ｎｉ合金具有较高电化学容量主要是由于在ＴｉＮｉ相的催化作用下，具有高贮氢量的Ｔｉ２Ｎｉ相和Ｚｒ９Ｎｉ１１相能可逆地吸放氢所致，而其较快的容量衰退则主要与Ｔｉ２Ｎｉ相的氧化有关。
The phase structure and electrochemical properties of (Ti0.7Zr0.2V0.1) Ni alloy were studied. The results show that the as-cast austenite phase has a B2 structure (CsCl type) in austenite phase under relatively fast cooling conditions (vacuum arc furnace melting and water-cooled copper crucible solidification) Phase transition into a monoclinic martensite phase; repeated electrochemical charge and discharge hydrogen to Ti2Ni and Zr9Ni11 phase gradually precipitated from the mother phase. At 50mA / g discharge rate, (Ti0.7Zr0.2V0.1) Ni alloy electrochemical capacity of up to 380mAh / g, is twice as TiNi binary alloy. However, after 10 cycles of charge and discharge, the alloy capacity rapidly declined to 200 mAh / g. The results show that the high electrochemical capacity of (Ti0.7Zr0.2V0.1) Ni alloy is mainly due to reversible hydrogen absorption and desorption of Ti2Ni phase and Zr9Ni11 phase with high hydrogen storage capacity under the catalysis of TiNi phase , While its rapid capacity decline is mainly related to the oxidation of Ti2Ni phase.