Jump to main content
Jump to site search

Issue 17, 2004

Influence of substituted zinc on stacking faults in nickel hydroxide

Author affiliations

Abstract

The evolution of the structure of zinc-substituted nickel hydroxides (α or β phases) during ageing in the KOH electrolytic medium was studied. The ageing leads to β-phases that contain zinc ions in tetrahedral sites of the interslab space, as shown by the EXAFS study. These interslab zinc ions entail in the aged materials a stabilization of the ideal ABAB oxygen packing, leading to a marked decrease of the number of stacking faults, and prevent especially deformation faults. As far as the electrochemical behaviour is concerned, the presence of zinc in tetrahedral sites of the interslab space links the successive slabs and prevents formation of the γ/α couple upon cycling. Moreover, it leads to an improvement of the electrochemical properties of the electrode (chargeability and conductivity of the material in the reduced state).

Graphical abstract: Influence of substituted zinc on stacking faults in nickel hydroxide

Article information


Submitted
27 Oct 2003
Accepted
01 Apr 2004
First published
05 Jul 2004

J. Mater. Chem., 2004,14, 2649-2654
Article type
Paper

Influence of substituted zinc on stacking faults in nickel hydroxide

L. Guerlou-Demourgues, C. Tessier, P. Bernard and C. Delmas, J. Mater. Chem., 2004, 14, 2649 DOI: 10.1039/B313501B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.


Search articles by author

Spotlight

Advertisements