The Effect of Crystallinity on the Reversible Discharge Capacity of Nickel Hydroxide

Jayashree, RS and Kamath, Vishnu P and Subbanna, GN (2000) The Effect of Crystallinity on the Reversible Discharge Capacity of Nickel Hydroxide. In: Journal of Electrochemical Society, 147 (6). pp. 2029-2032.

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Abstract

The higher reversible discharge capacity exhibited by $\beta_{bc}$ (bc: badly crystalline)-nickel hydroxide ($400 mAh g^{-1}$ of Ni; theoretical: $456 mAh g^{-1}$) compared to that of \beta-nickel hydroxide $(180 mAh g^{-1})$ can be attributed to the presence of regions characterized by turbostratic disorder in the former. These regions comprise the \alpha-modification of nickel hydroxide existing in an interstratified form within the $\beta_{bc}$ sample. The \alpha-motifs in the $\beta_{bc}$ are anion-free, but hydrated, by virtue of which $\beta_{bc}$-nickel hydroxide exhibits a higher water content (11% by weight) compared to the \beta-form (<1%).

Item Type:	Journal Article
Publication:	Journal of Electrochemical Society
Publisher:	Electrochemical Society
Additional Information:	Copyright of this article belongs to Electrochemical Society.
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	24 Jul 2008
Last Modified:	19 Sep 2010 04:48
URI:	http://eprints.iisc.ac.in/id/eprint/15234

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