Lithium secondary battery

Details Lithium secondary battery Lithium secondary battery

H - Electricity

01

M

H01M 10/40 (2006.01) H01M 4/58 (2006.01)

Patent

CA 2494596

A lithium secondary battery comprising a positive electrode, a negative electrode of artificial graphite or natural graphite and a nonaqueous electrolytic solution having an electrolyte dissolved in a nonaqueous solvent, wherein 0.1 to 20 wt.% of a cyclohexylbenzene having a halogen atom bonded to the benzene ring thereof is contained in the nonaqueous electrolytic solution. This lithium secondary battery exhibits large electric capacity and excellent cycle characteristics.

L'invention porte sur une batterie secondaire au lithium, qui comprend une électrode positive, une électrode négative de graphite artificiel ou de graphite naturel, et une solution électrolytique non aqueuse dont l'électrolyte est dissous dans un solvant non aqueux. La solution électrolytique contient 0,1 à 20 % en poids de cyclohexylbenzène présentant un atome d'halogène lié au noyau benzène du cyclohexylbenzène. Cette batterie secondaire au lithium présente une grande capacité électrique et d'excellentes caractéristiques de cycle.

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