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Effect of lightweight supports on specific discharge capacity of beta-nickel hydroxide

Ramesh, TN and Jayashree, RS and Kamath, PV and Rodrigues, S and Shukla, AK (2002) Effect of lightweight supports on specific discharge capacity of beta-nickel hydroxide. In: Journal of Power Sources, 104 (2). pp. 295-298.

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Abstract

While the performance Of beta(bc) (bc: badly crystalline)-nickel hydroxide is relatively unaffected by the use of different lightweight supports., the specific discharge capacity of crystalline beta-Ni(OH)(2) doubles to approximately 355 mAh g(-1) Ni (theoretical, 456 mAh g(-1)) when pasted to a fibre support compared with 170 mAh g(-1) Ni when pasted to a nickel foam. Consequently, the fibre is a superior support as it is unaffected by the quality of the active material and extracts a consistently high performance irrespective of the degree of crystallinity, moisture content, morphology and composition of the active material. Electrochemical impedance measurements indicate that a lower charge-transfer resistance at low states-of-charge is responsible for the superior performance of fibre supported beta-Ni(OH)2 electrodes.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Discharge Capacity;Lightweight Supports;Foams;Fibres;Nickel Hydroxide.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 02 Jun 2009 06:30
Last Modified: 19 Sep 2010 05:01
URI: http://eprints.iisc.ernet.in/id/eprint/18289

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