Phase structures and electrochemical properties of Cr-added V3TiNi0.56Hf0.24Mn0.15 alloys

被引：31

作者：

Zhang, QA ^{[1
]}

Lei, YQ ^{[1
]}

Yang, XG ^{[1
]}

Du, YL ^{[1
]}

Wang, QD ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2000年 / 25卷 / 10期

基金：

中国国家自然科学基金;

关键词：

V-based solid solution alloy; phase structure; electrochemical property;

D O I：

10.1016/S0360-3199(00)00019-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The phase structures and the electrochemical properties of the V3TiNi0.56Hf0.24Mn0.15Crx(x = 0, 0.1, 0.2 and 0.3) alloys have been studied. It is found that the alloys consist of a main phase with b.c.c structure and a Laves-type secondary phase with hexagonal structure. Increase on Cr content leads to change in the chemical composition and lattice parameters of each phase as well as in the molar fraction ratio of the main phase to the secondary phase. In V3TiNi0.56Hf0.24Mn0.15Crx alloys, increasing Cr content can improve the durability of the alloy electrode in KOH electrolyte despite the fact that its maximum hydrogen desorption capacity decreases slightly and high rate capability worsens. (C) 2000 International Association for Hydrogen Energy. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：977 / 981

页数：5

共 9 条

[1] A NICKEL METAL HYDRIDE BATTERY FOR ELECTRIC VEHICLES [J].

OVSHINSKY, SR ;

FETCENKO, MA ;

ROSS, J .

SCIENCE, 1993, 260 (5105) :176-181

[2] Vanadium-based solid solution alloys with three-dimensional network structure for high capacity metal hydride electrodes [J].

Tsukahara, M ;

Takahashi, K ;

Mishima, T ;

Isomura, A ;

Sakai, T .

JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 253 (1-2) :583-586

[3] METAL HYDRIDE ELECTRODES BASED ON SOLID-SOLUTION TYPE ALLOY TIV3NIX (0-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-0.75) [J].

TSUKAHARA, M ;

TAKAHASHI, K ;

MISHIMA, T ;

SAKAI, T ;

MIYAMURA, H ;

KURIYAMA, N ;

UEHARA, I .

JOURNAL OF ALLOYS AND COMPOUNDS, 1995, 226 (1-2) :203-207

[4] Heat-treatment effects of V-based solid solution alloy with TiNi-based network structure on hydrogen storage and electrode properties [J].

Tsukahara, M ;

Takahashi, K ;

Mishima, T ;

Isomura, A ;

Sakai, T .

JOURNAL OF ALLOYS AND COMPOUNDS, 1996, 243 (1-2) :133-138

[5] Influence of various additives in vanadium-based alloys V3TiNi0.56 on secondary phase formation, hydrogen storage properties and electrode properties [J].

Tsukahara, M ;

Takahashi, K ;

Mishima, T ;

Isomura, A ;

Sakai, T .

JOURNAL OF ALLOYS AND COMPOUNDS, 1996, 245 :59-65

[6] V-based solid solution alloys with Laves phase network: Hydrogen absorption properties and microstructure [J].

Tsukahara, M ;

Takahashi, K ;

Mishima, T ;

Isomura, A ;

Sakai, T .

JOURNAL OF ALLOYS AND COMPOUNDS, 1996, 236 (1-2) :151-155

[7] PHASE-STRUCTURE OF V-BASED SOLID-SOLUTIONS CONTAINING TI AND NI AND THEIR HYDROGEN ABSORPTION-DESORPTION PROPERTIES [J].

TSUKAHARA, M ;

TAKAHASHI, K ;

MISHIMA, T ;

SAKAI, T ;

MIYAMURA, H ;

KURIYAMA, N ;

UEHARA, I .

JOURNAL OF ALLOYS AND COMPOUNDS, 1995, 224 (01) :162-167

[8] Influence of Mn on phase structures and electrochemical properties of V3TiNi0.56Hf0.24 alloy [J].

Zhang, QA ;

Lei, YQ ;

Yang, XG ;

Du, YL ;

Wang, QD .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2000, 25 (07) :657-661

[9] Phase structures and electrochemical properties of V3TiNi0.56Hf0.24Cox alloys [J].

Zhang, QA ;

Lei, YQ ;

Yang, XG ;

Du, YL ;

Wang, QD .

JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 296 (1-2) :87-91

← 1 →