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Solvent-free lithium and sodium containing electrolytes based on pseudo-delocalized anions
- Forero-SaboyaThese authors have contributed equally to this work., Juan, Hosseini-Bab-Anari, Elham, Abdelhamid, Muhammad E., Moth-Poulsen, Kasper, Johansson, Patrik
- Chemical communications 2019 v.55 no.5 pp. 632-635
- anions, batteries, chemical reactions, electrochemistry, glass transition temperature, ionic liquids, lithium, mixing, sodium
- Mixing the standard battery salt LiTFSI with various Li-salts of novel pseudo-delocalized organic anions [N(CH₃)₂((CH₂)ₙSO₃)((CH₂)ₘSO₃)]⁻ (MMₙₘ₁₁), results in super-cooled solvent-free liquid electrolytes with glass transition temperatures of ca. 50 °C. Synthesis routes and full chemical characterisation of the new pseudo-delocalized anions are presented, as well as phase and thermal stabilities. The ion conductivities and electrochemical stabilities are evaluated towards lithium and sodium battery application.