Yosuke Ugata, Yichuan Chen, Shuhei Miyazaki, Shohei Sasagawa, Kazuhide Ueno, Masayoshi Watanabe, Kaoru Dokko
Non-flammable and oxidatively stable sulfones are promising electrolyte solvents for thermally stable high-voltage Li batteries. In addition, sulfolane-based high-concentration electrolytes (HCEs) show high Li+ ion transference numbers. However, LiPF6 has not yet been investigated as the main salt in sulfone-based HCEs for Li batteries. In this study, we investigated the phase behaviors, solvate structures, and transport properties of binary and ternary mixtures of LiPF6 and the following sulfone solvents: sulfolane (SL), dimethyl sulfone (DMS), ethyl methyl sulfone (EMS), and 3-methyl sulfolane (MSL)...
October 25, 2023: Physical Chemistry Chemical Physics: PCCP