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Grain size effect on diffusion processes in superionic phases Cu1.75Se, Li0.25 Cu1.75Se, and Li0.25 Cu1.75S

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Abstract

Ionic conduction and chemical diffusion in Cu1.75Se, Li0.25 Cu1.75Se, and Li0.25Cu1.75S at 140–240°C are studied. The ionic conduction of Cu1.75 Se is shown to increase with the average grain size. With coarsening of grains, the activation energy for ionic conduction decreases in Cu1.75Se and increases in Li0.25Cu1.75S. The reasons for the diffusion effects observed in the studied materials are discussed.

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Authors and Affiliations

  1. Bashkortostan State University, ul. Frunze 32, Ufa, Bashkorkostan, 450074, Russia

    M. Kh. Balapanov

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  1. M. Kh. Balapanov
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Correspondence to M. Kh. Balapanov.

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Original Russian Text © M.Kh. Balapanov, 2007, published in Elektrokhimiya, 2007, Vol. 43, No. 5, pp. 616–620.

Based on the paper delivered at the 8th Meeting “Fundamental Problems of Solid-State Ionics“, Chernogolovka (Russia), 2006.

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Balapanov, M.K. Grain size effect on diffusion processes in superionic phases Cu1.75Se, Li0.25 Cu1.75Se, and Li0.25 Cu1.75S. Russ J Electrochem 43, 590–594 (2007). https://doi.org/10.1134/S102319350705014X

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  • DOI: https://doi.org/10.1134/S102319350705014X

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