Surface analysis of an amorphous MgNi alloy prepared by mechanical alloying for use in nickel metal hydride batteries

被引：26

作者：

Zhang, SG

Yorimitsu, K

Nohara, S

Morikawa, T

Inoue, H

Iwakura, C ^{[1
]}

机构：

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

[2] Technol Res Inst Osaka Prefecture, Izumi, Osaka 5941157, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1998年 / 270卷 / 1-2期

关键词：

nickel-metal hydride battery; hydrogen storage alloy; MgNi; XPS; XAES;

D O I：

10.1016/S0925-8388(98)00371-5

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：

An amorphous MgNi alloy prepared by mechanical alloying has been investigated by means of X-ray photoelectron spectroscopy (XPS) and X-ray induced Auger electron spectroscopy (XAES) in combination with an Ar+ sputtering technology. At the top surface (ca. 30 Angstrom), Mg was dominant and existed in oxide forms while Ni mainly existed in the metallic state. Underneath the top surface, there was a layer enriched with metallic Ni which penetrates to more than 150 Angstrom. Such a distribution of Mg and Ni at the surface layer tightly correlates to the unique hydriding and dehydriding properties of the amorphous MgNi alloy. (C) 1998 Elsevier Science S.A.

引用

页码：123 / 126

页数：4

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