Liquid electrolyte for lithium batteries, method for producing the same, and lithium battery comprising the liquid electrolyte for lithium batteries

摘要

The present invention is to provide: a liquid electrolyte for batteries, which has excellent stability to lithium metals; a method for producing the liquid electrolyte; and a lithium battery comprising the liquid electrolyte. Presented is a liquid electrolyte for lithium batteries, wherein the liquid electrolyte comprises a mesoionic compound represented by the following general formula (1):;
wherein R1 is an aliphatic hydrocarbon group having 1 to 3 carbon atoms, and R2 is a group represented by any one of the following general formulae (2), (3) and (4): General Formula (2): —ClH2l—(OCH2)m—CnH2n+1; General Formula (3): —CxH2x—(CH2OCH2)y—CzH2z+1; and General Formula (4): —CpH2p—(C2H4OCH2)q—CrH2r+1.

主权项

1. A liquid electrolyte for lithium batteries, the liquid electrolyte comprising a lithium salt and a mesoionic compound represented by the following general formula (1): where:
R1 is an aliphatic hydrocarbon group having 1 to 3 carbon atoms, andR2 is selected from the group consisting of methoxymethyl group (—CH2OCH3), 2-methoxyethyl group (—C2H4OCH3), 3-methoxypropyl group (—C3H6OCH3), 4-methoxybutyl group (—C4H8OCH3), methoxymethoxymethyl group (—CH2OCH2OCH3), (2-methoxyethoxy)methyl group (—CH2OC2H4OCH3), 2-(methoxymethoxy)ethyl group (—C2H4OCH2OCH3), 2-(2-methoxyethoxy)ethyl group (—C2H4OC2H4OCH3), and 2-(methoxymethoxymethoxy)ethyl group (—C2H4OCH2OCH2OCH3).