P. Morozova, Nikita D. Luchinin, D. Rupasov
Sep 1, 2020
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Influential Citations
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Journal
Mendeleev Communications
Abstract
The feasibility of four ionic liquids containing bis(trifluoromethylsulfonyl) imide anion with different cations, namely 1-butyl-1-methylpyrrolidinium, 1-butyl-3-methylimidazolium, 1-methyl-1-propylpyrrolidinium and 1-ethyl-3-methylpyridinium, as solvents in an electrolyte of potassium ion batteries has been examined in half-cells with Al, Al2O3 as well as with practical cathode and anode materials. In spite of the previous reports on stability of ionic liquids with this anion in the 5 V limit, intrinsic electrochemical instability has been observed here both at high and low potentials, thus the investigated compounds can hardly be implemented in potassium ion cells due to their reactive nature.