IONIC LIQUID, SECONDARY BATTERY, ELECTRONIC DEVICE AND VEHICLE
The present invention provides a novel ionic liquid. The present invention also provides a secondary battery which has high charge and discharge capacity and high safety. An ionic liquid which comprises a cation represented by general formula (G1) and an anion represented by structural formula (200). In the formulae, each of X1 to X3 independently represents a fluorine atom, a chlorine atom, a bromine atom or an iodine atom; one of the X1 to X3 moieties may be a hydrogen atom; and each of n and m independently represents a number from 0 to 5. A secondary battery which comprises the above-described ionic liquid.