Nonaqueous electrolytic solution for lithium secondary battery

Details Nonaqueous electrolytic solution for lithium secondary battery Nonaqueous electrolytic solution for lithium secondary battery

H - Electricity

01

M

H01M 10/0566 (2010.01) C07C 7/148 (2006.01) C07C 15/02 (2006.01)

Patent

CA 2560380

Disclosed is a non-aqueous electrolytic solution for a lithium secondary battery which comprises an electrolyte salt in a non-aqueous solvent, which contains a tert-alkylbenzene compound in an amount of 0.1 to 10 wt.% based on an amount of the solution and which further contains a benzene compound having a benzene ring substituted with a hydrocarbon group having 1 to 4 carbon atoms via at least one tertiary carbon atom, in an amount of 0.001 to 0.5 wt.% based on the amount of the tert-alkylbenzene compound. Also disclosed is a lithium secondary battery comprising the non-aqueous electrolytic solution.

L'invention se rapporte à une solution non aqueuse d'Electrolyte utile pour produire une batterie secondaire au lithium ayant d'excellentes caractEristiques de cycle. Elle se rapporte prEcisEment à une solution non aqueuse d'Electrolyte pour batteries secondaires au lithium, obtenue par dissolution d'un Electrolyte dans un solvant non aqueux, laquelle est caractErisEe en ce qu'elle contient 0,1-10 % en poids d'un composE de <i>tert</i>-alkylbenzEne et en ce qu'elle contient Egalement 0,001-0,5 % en poids d'un composE du benzEne, et dans laquelle un groupe hydrocarbonE ayant 1-4 atomes de carbone est liE A un noyau benzEnique via l'atome de carbone tertiaire, relativement au composE de <i>tert</i>-alkylbenzEne.

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