LITHIUM SECONDARY BATTERY

摘要

Provided is a lithium secondary battery for stop-start systems, said battery being capable of being discharged at -30°C and 20 ItA or above, and capable of being charged at 50 ItA or above. The positive electrode material of the lithium secondary battery is obtained by chemically bonding the surface carbon atoms of a conductive carbon material and lithium-containing metal phosphate compound particles, which are obtained by coating the surfaces thereof with an amorphous carbon material. The negative electrode material of the lithium secondary battery contains soft carbon particles and/or graphite particles with a specific surface area of at least 6 m2/g. The mixed electrolyte of the lithium secondary battery contains lithium hexafluorophosphate and lithium bis(fluorosulfonic acid)imide.