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Solid electrolytes based on rubidium monoaluminate doped with four-charged cations

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Abstract

Solid electrolytes with rubidium-cation conductivity in the Rb1−x Al1 − x E x O2 (E = Si, Ti, Ge) systems are synthesized. Their phase composition, temperature and concentration dependences of conductivity are studied. A high rubidium-cation conductivity (3 × 10−3 S cm−1 at 300°C, 1.4 × 10−2 S cm−1 at 700°C) is caused by the formation of rubidium vacancies as a result of Rb+ + Al3+ → E4+ + VRb substitution and stabilization of disordered structure of γ-KAlO2 type.

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Authors and Affiliations

  1. Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 22, Yekaterinburg, 620990, Russia

    G. Sh. Shekhtman & E. I. Burmakin

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  1. G. Sh. Shekhtman
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  2. E. I. Burmakin
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Correspondence to E. I. Burmakin.

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Original Russian Text © G.Sh. Shekhtman, E.I. Burmakin, 2015, published in Elektrokhimiya, 2015, Vol. 51, No. 5, pp. 462–466.

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Shekhtman, G.S., Burmakin, E.I. Solid electrolytes based on rubidium monoaluminate doped with four-charged cations. Russ J Electrochem 51, 397–400 (2015). https://doi.org/10.1134/S1023193515050122

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  • DOI: https://doi.org/10.1134/S1023193515050122

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