Site preference of cobalt and deuterium in the structure of a complex AB5 alloy electrode -: A neutron powder diffraction study

被引：29

作者：

Vogt, T ^{[1
]}

Reilly, JJ

Johnson, JR

Adzic, GD

McBreen, J

机构：

[1] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[2] Brookhaven Natl Lab, Dept Appl Sci, Upton, NY 11973 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1999年 / 146卷 / 01期

关键词：

D O I：

10.1149/1.1391557

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The site preference of cobalt and deuterium in the charged and discharged state of a commercial-type metal hydride anode was investigated by high resolution neutron powder diffraction using an alloy with an altered isotope composition. in the alloy La(Ni-58(0.376) Ni-62(0.624))(3.55)Co0.75Mn0.33Al0.30 the isotope ratio of Ni-58 to Ni-62 leads to a zero neutron scattering length for nickel. Rietveld refinement revealed that Al and Mn occupy the midplane 3g sites of the CaCu5 structure, while cobalt has a preference for 3g but also occupies the basal plane 2c sites. The space group of the deuteride remains P6/mmm which differs from the parent LaNi5D7 which is P6(3)mc. (C) 1999 The Electrochemical Society. S0013-4651(98)03-104-8. All rights reserved.

引用

页码：15 / 19

页数：5

共 16 条

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Achard J.C., 1982, RARE EARTHS MODERN S, V3, P481

[2] Function of cobalt in AB(5)H(x) electrodes [J].