| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-aqueous electrolyte secondary battery suppressing increase in internal resistance when a stored battery is used.SOLUTION: The non-aqueous electrolyte according to the present invention comprises a heterocyclic compound consisting of a thiazole derivative or an isothiazole derivative having a functional group represented by -X-R (X is a sulfur atom or an oxygen atom and R is an alkyl group or a hydrogen atom). The present invention can suppress increase in internal resistance when a stored battery is used, by using the non-aqueous electrolyte containing the heterocyclic compound having the certain functional group. |
