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Effect of hydrogen treatment on the discharge properties of electrodes made of ZrCrNi alloy

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Abstract

For metal-hydride electrodes based on ZrCrNi alloy, we have established an increase in their activation rate (two charge-discharge cycles) and discharge capacitance after homogenization of the Laves phase with a C14-type structure at the expense of treatment of the alloy by the method of partial disproportionation in hydrogen at 873 K and recombination in vacuum at 1223 K. The discharge capacitance decreases after disproportionation at 1083 K and recombination accompanied by the formation of the Laves phase with a C15-type structure. We have also determined the optimal milling conditions for this alloy in a planetary mill in hydrogen: rotational speed 100 rpm and milling time 30 min.

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  1. Karpenko Physicomechanical Institute, Ukrainian Academy of Sciences, Lviv

    I. I. Bulyk & Yu. B. Basaraba

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  1. I. I. Bulyk
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  2. Yu. B. Basaraba
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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 41, No. 6, pp. 49–54, November–December, 2005.

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Bulyk, I.I., Basaraba, Y.B. Effect of hydrogen treatment on the discharge properties of electrodes made of ZrCrNi alloy. Mater Sci 41, 764–771 (2005). https://doi.org/10.1007/s11003-006-0042-4

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  • DOI: https://doi.org/10.1007/s11003-006-0042-4

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