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

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Abstract

Metal-hydride electrodes made of an AB2 alloy of the composition 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-chargecomprisetwoRC-time constants and accordingly are analysed by using a nonlinear-least-square-fitting procedure. Resistance of the electrode and frequency maximumf* of the lowfrequency semicircle are found useful for predicting state-of-charge of the metalhydride electrodes.

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Authors and Affiliations

  1. Solid State and Structural Chemistry Unit, Indian Institute of Science, 560 012, Bangalore, India

    S. Rodrigues & A. K. Shukla

  2. Department of Inorganic and Physical Chemistry, Indian Institute of Science, 560 012, Bangalore, India

    N. Munichandraiah

Authors
  1. S. Rodrigues
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  2. N. Munichandraiah
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  3. A. K. Shukla
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Correspondence to N. Munichandraiah or A. K. Shukla.

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Rodrigues, S., Munichandraiah, N. & Shukla, A.K. AC impedance behaviour and state-of-charge dependence of Zr0¨5Ti0¨5V0¨6Cr0¨2Ni1¨2 metal-hydride electrodes. J Chem Sci 113, 527–537 (2001). https://doi.org/10.1007/BF02708788

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  • DOI: https://doi.org/10.1007/BF02708788

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