Electrolyte solvent for cathode active material composed of lithium oxo acid salt, electrolyte solution for cathode active material composed of lithium oxo acid salt, and lithium ion secondary battery

摘要

An electrolyte solvent for a cathode active material composed of lithium oxo acid salt. The solvent is used for a lithium ion secondary battery using the lithium oxo acid salt as a cathode material. The electrolyte solvent includes an ammonium ion which includes two or more alkoxyalkyl groups.