Novel Br− ion conducting solid electrolyte based on LaOBr

Muhammad Radzi Iqbal Bin MISRAN; Naoyoshi NUNOTANI; Shinji TAMURA; Nobuhito IMANAKA

doi:10.2109/jcersj2.18075

Feature: The 56th Symposium on Basic Science of Ceramics: Full papers

Novel Br⁻ ion conducting solid electrolyte based on LaOBr

Muhammad Radzi Iqbal Bin MISRAN, Naoyoshi NUNOTANI, Shinji TAMURA, Nobuhito IMANAKA

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Keywords: Solid electrolyte, Bromide ion, Lanthanum oxybromide, Ion conductivity

JOURNAL FREE ACCESS

2018 Volume 126 Issue 10 Pages 761-765

DOI https://doi.org/10.2109/jcersj2.18075

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Abstract

Highly Br⁻ ion conducting solid electrolytes were developed by replacing La³⁺ ion site in LaOBr with lower valent Sr²⁺ and Ca²⁺ ions to form Br⁻ ion vacancies for Br⁻ ion conduction with suppressing the sample decomposition. By doping two kinds of divalent cations simultaneously into LaOBr lattice, high amount of Br⁻ ion vacancy was successfully introduced compared to the previously reported La_0.9Sr_0.1OBr_0.9. Among the samples prepared, the highest Br⁻ ion conductivity was obtained for the La_0.85Sr_0.10Ca_0.05OBr_0.85 solid, which was ca. 5 times higher than that of La_0.9Sr_0.1OBr_0.9.

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