ELECTROLYTE SOLVENT FOR POSITIVE ELECTRODE ACTIVE MATERIAL COMPOSED OF OXO ACID SALT OF LITHIUM, ELECTROLYTE SOLUTION FOR POSITIVE ELECTRODE ACTIVE MATERIAL COMPOSED OF OXO ACID SALT OF LITHIUM, AND LITHIUM ION SECONDARY BATTERY

摘要

The purpose of the present invention is to provide: an electrolyte solvent for a positive electrode active material that is composed of an oxo acid salt of lithium and an electrolyte solution for a positive electrode active material that is composed of an oxo acid salt of lithium, both of which can be used in a lithium ion secondary battery that uses, as a positive electrode active material, an oxo acid salt of lithium having excellent Coulomb force efficiency and excellent discharge capacity; and a lithium ion secondary battery which uses the electrolyte solvent or the electrolyte solution.The present invention relates to an electrolyte solvent which is used in a lithium ion secondary battery that uses an oxo acid salt of lithium as a positive electrode active material. The electrolyte solvent for a positive electrode active material has ammonium ions each of which contains two or more alkoxyalkyl groups as substituents.