Electrolyte having eutectic mixture and nitrile compound, and electrochemical device containing the same

摘要

Disclosed is an electrolyte comprising (a) a eutectic mixture of an amide compound represented by the following chemical formula 1 or 2 and an ionizable lithium sa and (b) a nitrile compound. The eutectic mixture and the nitrile compound in the electrolyte contribute to excellent thermal and chemical stability and sufficiently low viscosity and high ion conductivity. The electrolyte can be usefully applied as an electrolyte of electrochemical devices.