Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 12    No. 5    October 2002

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Properties of Zr-Ti-V-Mn-Ni hydride alloy
WEN Ming-fen(文明芬)1, ZHAI Yu-chun(翟玉春)2,
WANG Xin-hai(王新海)1, CHEN Lian(陈   廉)3

1. Institute of Nuclear Energy and Technology, 
Tsinghua University, Beijing 102201, China;
2. Department of Materials and Metallurgy,
 Northeastern University, Shenyang 110004, China;
3. Institute of Metal Research, The Chinese Academy of Sciences,
 Shenyang 110016, China

Abstract:Six kinds of Zr-based hydride alloy were designed. XRD analyses show that the main phase of Zr(1-x)Tix-(NiCoMnV)2.1 alloy is Laves C15 when x is between 0 and 0.5,but the more the content of Ti, the more the Laves C14 phases. The amount of Laves C14 can be up to the amount of Laves C15 after substituted V and Fe by V-Fe alloy in Zr0.6-Ti0.4(NiCoMnVFeCr)1.7 alloy. The electrochemical measurements show that the discharge capacity of Zr0.9Ti0.1-(NiCoMnV)2.1 electrode is about 340(mA·h/g) at 60mA/g, but with increasing the amount of Ti, the discharge capacity of alloy electrode abruptly decreases; at 300mA/g current density, its Kr can be up to 91%. The discharge capacity of Zr0.6-(Ti0.4)-(NiCoMn(V-Fe)Cr)1.62 alloy electrode is about 200(mA·h/g) at first cycle, the maximum capacity is more than that of the electrode with pure V, and about 315mA·h/g.

 

Key words:  Zr-based hydride alloy; XRD; Laves phase; discharge capacity

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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