AC impedance behaviour and state-of-charge dependence of Zr0.5Ti0.5V0.6Cr0.2Ni1.2 metal-hydride electrodes

Rodrigues, S and Munichandraiah, N and Shukla, AK (2001) AC impedance behaviour and state-of-charge dependence of Zr0.5Ti0.5V0.6Cr0.2Ni1.2 metal-hydride electrodes. In: Proceedings of the Indian Academy of Sciences Chemical Sciences, 113 (5). pp. 527-537.

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Abstract

Metal-hydride electrodes made of an AB2 alloy of the compositionb Zr0×5Ti0×5V0×6Cr0×2Ni1×2 are studied for AC impedance behaviour at several of their state-of-charge values. Impedance data at any state-of-charge comprise two RC-time constants and accordingly are analysed by using a nonlinear-least-square-fitting procedure. Resistance of the electrode and frequency maximum ( f *) of the lowfrequency semicircle are found useful for predicting state-of-charge of the metalhydride electrodes

Item Type:	Journal Article
Publication:	Proceedings of the Indian Academy of Sciences Chemical Sciences
Publisher:	Indian Academy Sciences
Additional Information:	The Copyright belongs to the Indian Academy of Sciences.
Keywords:	Hydrogen-storage alloy;metal-hydride electrode;AC impedance;AB2 alloys;state-of-charge
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	07 Sep 2004
Last Modified:	19 Sep 2010 04:16
URI:	http://eprints.iisc.ac.in/id/eprint/1958

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