Patent Number: 8,586,250

Title: Non-aqueous electrolyte solution for storage battery devices, and storage battery device

Abstract: To provide a non-aqueous electrolyte solution for storage battery devices which has high lithium salt solubility, high conductivity and excellent cycle characteristics, and a storage battery device wherein such a non-aqueous electrolyte solution is used. A non-aqueous electrolyte solution for storage battery devices, which comprises a specific lithium salt (A) and a solvent (B) containing a hydrofluoroether (b1) represented by CF.sub.3CH.sub.2OCF.sub.2CF.sub.2H and a carbonate type solvent (b2), wherein the content of the hydrofluoroether (b1) is from 1 to 30 vol % based on the total amount i.e. 100 vol % of the solvent (B); and a storage battery device wherein such a non-aqueous electrolyte solution for storage battery devices is used.

Inventors: Iwaya; Masao (Tokyo, JP)

Assignee: Asahi Glass Company, Limited

International Classification: H01M 6/16 (20060101)

Expiration Date: 1/19/12018