MICROSTRUCTURE AND ELECTROCHEMICAL CHARACTERISTICS OF Zr0.9Ti0.1(Ni1.1Mn0.7V0.2)x METAL HYDRIDE ELECTRODE

被引:0
|
作者
S.M.Han
M.S.Zhao
Y.Z.Zeng
机构
[1] China
[2] Yanshan University
[3] Qinhuangdo 066004
[4] Department of Environmental and Chemical Engineering
[5] Qinhuangdao 066004
[6] Changchun Institute of Applied Chemistry
[7] The Chinese Academy of Sciences
[8] Changchun 130022
[9] China Key Laboratory of Rare Earth Chemistry and Physics
关键词
metal hydride electrode; microstructure; electrochemical characteristics; non-stoichiometric ratio;
D O I
暂无
中图分类号
TG14 [金属材料];
学科分类号
080502 ;
摘要
The crystal structure, the phase composition and the electrochemical characteristics of Zr0.9Ti0.1(Ni1.1Mn0.7V0.2)x (x=0.90, 0.95, 1.00, 1.05) alloys were investigated by means of XRD, SEM, EDS and electrochemical measurements. It was shown that all alloys are multiphase with C15 Laves phase as a main phase along with C14 phase and some secondary phases. And the amounts of the C14 phase and secondary phases in the four alloys increases with decreasing x. The results indicated that the various stoichiometric ratios have great effects on the electrochemical characteristics such as the maximum discharge capacity, discharge rate capability and self-discharge properties etc. for Zr0.9Ti0.1(Ni1.1Mn0.7 V0.2)X (x=0.90, 0.95, 1.00, 1.05) alloys. The hyper-stoichiometric Zr0.9 Ti0.1(N1.1Mn0.7 V0.20)1.05 exhibits the maximum discharge capacity of 332mAh-g-1. The C14 phase and secondary phases seems to improve discharge rate capability of the alloys.
引用
收藏
页码:192 / 196
页数:5
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