Valiant Co., Ltd.

Liqi Xuan

Heng Jiang

Yu Shi

Cunsheng Lin

Shanguo Zhang

Shaobang Fu

Huanjie Wang

An isocyanate electrolyte solution additive containing a sulfamide structural group has a structure of formula I: where Rand Rare identical or different, Rand Rare each independently selected from methyl, ethyl, butyl, methoxy, methanesulfonyl, ethanesulfonyl, fluorosulfonyl, trifluoromethanesulfonyl, perfluoroethylsulfonyl, benzenesulfonyl, alkyl-containing benzenesulfonyl, cyano/fluorobenzenesulfonyl and alkoxy-containing benzenesulfonyl, and Rand Rcan be linked to form one of five-membered ring or six-membered ring.

Electrolyte solution additive containing isocyanate and sulfamide structural groups and application thereof

The present disclosure relates to an isocyanate electrolyte solution additive based on an imidazole structural group, belonging to the technical field of non-aqueous electrolyte solution additives of lithium batteries. The structural formula of the electrolyte solution additive is represented by formula I: R, Rand Rare identical or different, the R, Rand Rare each independently selected from one of hydrogen, methyl, ethyl, propyl, tert-butyl, trifluoromethyl, trifluoroethyl, perfluoroethyl, perfluoropropyl, cyanoethyl, phenyl, fluorophenyl, cyano-containing fluorophenyl, alkoxy-containing phenyl and alkyl-containing phenyl. The electrolyte solution additive is used for lithium ion batteries, which effectively inhibits the reduction in battery capacity, restricts the production of a gas caused by decomposition of an electrolyte solution and significant improvement in the service life of the battery during the high temperature cycle and high temperature storage.

Isocyanate electrolyte solution additive based on imidazole structural group and use thereof

Growing community of inventors

Yantai, China

Liqi Xuan