| MICROSTRUCTURE AND ELECTROCHEMICAL CHARACTERISTICS OF Zr_(0.9)Ti_(0.1)(Ni_(1.1)Mn_(0.7)V_(0.2))_x METAL HYDRIDE ELECTRODE |
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| 作者姓名： | S.M.Han M.S.Zhao Y.Z.Zeng |
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| 作者单位： | Department of Environmental and Chemical Engineering，Yanshan University，Qinhuangdao 066004，China Key Laboratory of Rare Earth Chemistry and Physics，Changchun Institute of Applied Chemistry，The Chinese Academy of Sciences，Changchun 130022，China，Department of Environmental and Chemical Engineering，Yanshan University，Qinhuangdao 066004，China Key Laboratory of Rare Earth Chemistry and Physics，Changchun Institute of Applied Chemistry，The Chinese Academy of Sciences，Changchun 130022，China，Department of Environmental and Chemical Engineering，Yanshan University，Qinhuangdo 066004，China |
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| 基金项目： | 国家自然科学基金，中国科学院资助项目 |
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| 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.
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MICROSTRUCTURE AND ELECTROCHEMICAL CHARACTERISTICS OF Zr0.9 Ti0.1(Ni1.1Mn0.7V0.2)x METAL HYDRIDE ELECTRODE |
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| S.M.Han,M.S.Zhao,Y.Z.Zeng.MICROSTRUCTURE AND ELECTROCHEMICAL CHARACTERISTICS OF Zr_(0.9)Ti_(0.1)(Ni_(1.1)Mn_(0.7)V_(0.2))_x METAL HYDRIDE ELECTRODE[J].Acta Metallurgica Sinica(English Letters),2003,16(3). |
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| Authors: | SMHan MSZhao YZZeng |
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| Abstract: | 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. |
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| Keywords: | metal hydride electrode microstructure electrochemical characteristics non-stoichiometric ratio |
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