ELECTROLYTE FOR LITHIUM ION CAPACITOR AND LITHIUM ION CAPACITOR

摘要

Provided are: an electrolyte for a lithium ion capacitor having improved low-temperature properties and service life; and a lithium ion capacitor using the electrolyte. The electrolyte contains a solvent formed from a cyclic carbonate comprising ethylene carbonate (EC) and propylene carbonate (PC) and a chain carbonate comprising dimethyl carbonate (DMC) and ethyl methyl carbonate (EMC). The electrolyte may further contain vinylene carbonate (VC). The lithium ion capacitor that uses the electrolyte can be configured so that the positive electrode material contains activated carbon and the negative electrode material contains a non-graphitizing carbon.