Hydriding and dehydriding characteristics of an amorphous Mg2Ni-Ni composite

被引：47

作者：

Iwakura, C ^{[1
]}

Nohara, S ^{[1
]}

Zhang, SG ^{[1
]}

Inoue, H ^{[1
]}

机构：

[1] Univ Osaka Prefecture, Coll Engn, Dept Appl Chem, Sakai, Osaka 5998531, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1999年 / 285卷 / 1-2期

关键词：

nickel-metal hydride battery; hydrogen storage alloy; Mg2Ni-Ni composite; amorphous structure; ball mill;

D O I：

10.1016/S0925-8388(98)00966-9

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：

Hydriding and dehydriding characteristics of a Mg,Ni-Ni composite prepared by ball-milling Mg,Ni alloy with 70 wt. % Ni (Mg2Ni/Ni=1/1.28 in mole ratio) were investigated. As a result, it was found that the Mg2Ni-Ni composite showed a marked increase in the hydriding rate and the dehydriding commenced at much lowered temperature or even at room temperature, compared with Mg,Ni and ball-milled Mg,Ni alloys. Such a marked improvement in the hydriding and dehydriding characteristics, as well as the charge-discharge characteristics, by ball-milling the Mg2Ni alloy with Ni is probably due to the appearance of the homogeneous amorphous structure over the whole alloy particles. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：246 / 249

页数：4

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