Characterisation of new nickel hydroxides during the transformation of alpha Ni(OH)(2) to beta Ni(OH)(2) by ageing

被引：101
|
作者：
Bernard, MC [1 ]
Bernard, P [1 ]
Keddam, M [1 ]
Senyarich, S [1 ]
Takenouti, H [1 ]
机构：
[1] UNIV PARIS 06,CNRS,UPR 15,F-75252 PARIS 05,FRANCE
来源：
ELECTROCHIMICA ACTA | 1996年 / 41卷 / 01期
关键词：
nickel hydroxide; ageing; electrochemical reactivity; Raman spectroscopy;
D O I：
10.1016/0013-4686(95)00282-J
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The aim of this paper is to characterise the compounds formed by the ageing of alpha NI(OH)(2) in 5 M KOH at 70 degrees C. The final product of this treatment is known as the beta Ni(OH)(2) phase, but with the ageing period, a progressive change of electrochemical reactivity as well as a textural and structural evolution are observed. The products obtained are stable in time once the ageing is stopped and are not a mere mixture of alpha and beta but single phase nickel hydroxides whose properties are intermediate between those of alpha and beta Ni (OH)(2). Intermediate forms of nickel hydroxide, whose specific features seem to be the crystallites size and the quantity of absorbed nitrate ions, will be called ''badly crystallised beta'' or beta(bc) as proposed by Delmas et al.
引用
收藏
页码：91 / 93
页数：3
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