1. Aqueous solution synthesis of lithium-ion conductive tin-based sulphide electrolytes.
- Author
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Kimura, Takuya, Tanigaki, Hayata, Sakuda, Atsushi, Tatsumisago, Masahiro, and Hayashi, Akitoshi
- Subjects
SOLID electrolytes ,IONIC conductivity ,AQUEOUS solutions ,HUMAN ecology ,ORGANIC solvents ,SUPERIONIC conductors - Abstract
To overcome the challenges associated with the toxicity of the majority of organic solvents for the liquid phase synthesis of solid electrolytes toward the human body and environment, we demonstrate the synthesis of tin-based sulphide electrolytes using water, which is the most environmentally friendly solvent. ortho-Thiostannate, i.e., Li
4 SnS4 , was obtained from a mixture of Li2 S, Sn, and S using aqueous solution synthesis. Furthermore, Li10 SnP2 S12 , a superionic conductor, was obtained by mixing an aqueous solution of Li4 SnS4 and tetrahydrofuran suspension of Li3 PS4 , which exhibited the highest ionic conductivity (5.9 × 10−3 S cm−1 at 25 °C) in liquid-phase synthesis. This study successfully demonstrates that water can be efficiently used to synthesize sulphide electrolytes instead of conventional organic solvents. [ABSTRACT FROM AUTHOR]- Published
- 2024
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