LITHIUM SULFUR SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a lithium sulfur secondary battery which enables the suppression of the worsening of charge and discharge efficiencies and cycle characteristics of a discharge capacity.SOLUTION: A lithium sulfur secondary battery B according to the present invention comprises: a positive electrode P having a positive electrode active material including sulfur 5; a negative electrode N having a negative electrode active material including lithium; and an electrolytic solution L containing an electrolyte interposed between the positive and negative electrodes. The electrolyte consists of lithium bis (fluoro sulfonyl)imide (LiFSI).