New, Stable, Ambient-Temperature Molten Salts
Open Access
- 1 January 1992
- journal article
- Published by The Electrochemical Society in ECS Proceedings Volumes
- Vol. 1992-16 (1) , 386-396
- https://doi.org/10.1149/199216.0386pv
Abstract
New ambient-temperature organic molten salts are described. They are easily prepared (usually in one step) and consist o f alkyl-substituted aromatic heterocyclic cations and trifluoromethanesulfonate (triflate) or methanesulfonate (mesylate) anions. For example, 1-ethyl-3-methylimidazolium triflate has m.p.≃— 10°C, σ=9.3 mS/cm and η=43 cP at 25°, an electrochemical stability window of >4V, and a weight loss rate o f 2. Interesting differences between triflates and mesylates are discussed. The thermal and chemical stability, wide electrochemical window and high conductivity of some of the new salts make them promising electrolytes and antistats.Keywords
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