High capacity hydrogen storage alloy negative electrodes for use in nickel-metal hydride batteries

被引：7
|
作者：
Inoue, Hiroshi [1 ]
Kotani, Norihiro [1 ]
Chiku, Masanobu [1 ]
Higuchi, Eiji [1 ]
机构：
[1] Osaka Prefecture Univ, Grad Sch Engn, Dept Appl Chem, Sakai, Osaka 5998531, Japan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 645卷
关键词：
Electrode materials; Hydrogen-absorbing materials; Transition metal alloys and compounds; Crystal structure; Electrochemical reactions; Electrochemical impedance spectroscopy; ELECTROCHEMICAL PROPERTIES; SOLID-SOLUTION; STRUCTURAL CHARACTERISTICS; SURFACE MODIFICATION; TIV2.1NI0.3; ALLOY; RANEY NI; SUBSTITUTION; PERFORMANCE; MGNI;
D O I：
10.1016/j.jallcom.2015.01.132
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：
Rare earth-free V-based TiV2.1 xCrxNi0.3 (x = 0.4-1.0) alloys were prepared by arc-melting. All alloys were composed of two phases, the primary phase in which the V and Cr constituents were mainly distributed and the secondary phase in which the Ti and Ni constituents were mainly distributed. When the Cr content was increased, the maximum discharge capacity was decreased, but charge-discharge cycle durability was improved. The lower the charge-transfer resistance and the higher the specific discharge current at which the positive shift of potential at degree of discharge of 50% stagnates, the higher the HRD. In the present study, the TiV1.6Cr0.5Ni0.3 alloy electrode had the highest HRD. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：S136 / S139
页数：4
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