The cationic portion of N-ethyl-N-methylpiperidine bis(trifluoromethanesulfonyl)imide salt is the piperidine ring, which belongs to a six-membered cyclic structure and has an ethyl and a methyl group attached to the nitrogen atom. This structure gives it high chemical stability and low viscosity. The TFSI anion is a bulky fluorine-containing anion with excellent electrochemical stability and low pairing energy. The presence of TFSI allows it to exhibit a low melting point and good conductivity, while being non-volatile, reducing its environmental impact. It can be used as battery electrolytes, supercapacitors, green solvents and lubricants and coatings.
Ionic liquids have reshaped the landscape of modern chemistry by offering tunable, room-temperature molten salts with near-zero vapor pressure. Among the many structural families that have emerged, ether-based ionic liq...
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