ELECTROLYTE AND LITHIUM METAL BATTERY COMPRISING ELECTROLYTE, BATTERY MODULE, BATTERY PACK, AND APPARATUS

WIPO Patent Application WO/2021/047405

A1

The present application provides an electrolyte and a lithium metal battery comprising the electrolyte. The electrolyte comprises a lithium salt, an organic solvent, and an additive. The additive comprises a sultam compound as represented by structural formula I, wherein R is selected from substituted or unsubstituted C 1-C 10 hydrocarbyl, and a substituent is selected from phenyl, C 1-C 6 alkyl, and C 1-C 6 alkenyl; X is a sulfur atom or a phosphorus atom; R 1 and R 2 are independently selected from an oxygen atom, a fluorine atom, a chlorine atom, a bromine atom, or substituted or unsubstituted C 1-C 10 hydrocarbyl, respectively, and R 1 and R 2 may not be oxygen atoms at the same time. The additive, the sultam compound, in the electrolyte of the present application contains a sulfonyl group, and an interfacial film composed of sulfate, lithium sulfonate, polysulfonimide, and the like can be formed on surfaces of both a positive electrode and a negative electrode. The interfacial film formed thereby has good ion conductivity, can facilitate reducing impedance of the battery, and can inhibit an excessive side effect between the positive and negative electrodes and the electrolyte, thereby improving the cycle performance of a battery.

LIU CHENGYONG (CN)
GUO YONGSHENG (CN)
LIANG CHENGDU (CN)
FAN QUAN (CN)

PCT/CN2020/112391

March 18, 2021

August 31, 2020

Click for automatic bibliography generation  

CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)

H01M10/0567

CN106505242A	2017-03-15
CN103109410A	2013-05-15
CN102893441A	2013-01-23
JP2007172990A	2007-07-05
KR20160063187A	2016-06-03
CN1659154A	2005-08-24

See also references of EP 3951988A4

View/Download PDF      PDF Help

Previous Patent: NETWORK PARAMETER CONFIGURATION METHOD AND APPARATUS

Next Patent: TRICYCLIC COMPOUND, PHARMACEUTICAL COMPOSITION CONTAINING SAME, PREPARATION METHOD THEREFOR AND USE ...