Effect of Co and Mn on the electrochemical properties of La0.7Mg0.3Ni2(Co+Mn) alloys

被引：9

作者：

Guo, J ^{[1
]}

Jiang, WQ ^{[1
]}

Xiao, RJ ^{[1
]}

Huang, CK ^{[1
]}

Huang, D ^{[1
]}

机构：

[1] Guangxi Univ, Coll Phys Sci & Technol, Nanning 530004, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2005年 / 390卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

hydrogen storage alloy; discharge capacity; cycle life;

D O I：

10.1016/j.jallcom.2004.08.032

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 effects of the relative Co and Mn content on the electrochemical performance of La0.7Mg0.3Ni2(Co+Mn) hydrogen storage alloys were investigated. The crystal structure, discharge capacity and cycle life of the alloys were evaluated. For all alloys, we found that the higher the Co content, the larger is discharge capacity. The appropriate amount of Mn in La0.7Mg0.3Ni2(Co+Mn) alloys can extend the cycle life of the hydrogen storage alloys although the alloys have less discharge capacity than those with higher Co content. In addition, the LaNi(3.87)Nln(1.13) phase appears and the LaNi5 phase disappears with replacement of Co by Mn. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：301 / 304

页数：4

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