NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery that suppresses the expansion of a battery and improves cycle characteristics.

SOLUTION: The nonaqueous electrolyte secondary battery 20 comprises a positive electrode 13 containing a positive electrode active substance with a sulfur single body as a main body; a negative electrode 11 containing a negative electrode active material with hard carbon as a main body; and a nonaqueous electrolyte 16 with at least one ether selected from a group consisting of chain ether and annular ether as a solvent.

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