Ramesh, TN and Kamath, PV and Shivakumara, C (2005) Correlation of structural disorder with the reversible discharge capacity of nickel hydroxide electrode. In: Journal of the Electrochemical Society, 152 (4). A806-A810.
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Hydrothermal treatment of a slurry of badly crystalline (beta(bc)) nickel hydroxide at different temperatures (65-170 degrees C) results in the progressive ordering of the structure by the step-wise elimination of disorders. Interstratification is eliminated at 140 degrees C, while cation vacancies are eliminated at 170 degrees C. A small percentage of stacking faults continue to persist even in `crystalline' samples. Electrochemical investigations show that the crystalline nickel hydroxide has a very low (0.4 e/Ni) reversible charge storage capacity. An incidence of at least 15% stacking faults combined with cation vacancies is essential for nickel hydroxide to perform close to its theoretical (1 e/ Ni) discharge capacity. (c) 2005 The Electrochemical Society.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to The Electrochemical Society.|
|Department/Centre:||Division of Chemical Sciences > Solid State & Structural Chemistry Unit|
|Date Deposited:||02 Jun 2010 05:07|
|Last Modified:||19 Sep 2010 06:06|
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