| abstract |
A lithium secondary battery having excellent heat resistance is provided. This lithium secondary battery is composed of a positive electrode plate which is a lithium composite oxide sintered body plate, a negative electrode containing carbon and styrene-butadiene rubber (SBR), and γ-butyrolactone (GBL), or γ-butyrolactone (GBL). ) And an electrolyte solution containing lithium borofluoride (LiBF 4 ) in a non-aqueous solvent composed of ethylene carbonate (EC). |