Lithium ion battery electrolyte, lithium ion battery and vehicle
The invention belongs to the field of lithium ion batteries, and particularly relates to a lithium ion battery electrolyte and a lithium ion battery. The lithium ion battery electrolyte provided by the invention comprises a first compound and a second compound, the structure of the first compound is...
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Format | Patent |
Language | Chinese English |
Published |
19.09.2023
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Subjects | |
Online Access | Get full text |
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Summary: | The invention belongs to the field of lithium ion batteries, and particularly relates to a lithium ion battery electrolyte and a lithium ion battery. The lithium ion battery electrolyte provided by the invention comprises a first compound and a second compound, the structure of the first compound is as follows: # imgabs0 #, and R1, R2 and R3 are respectively and independently selected from alkyl with 1-4 carbon atoms; r4 is selected from alkylene with the carbon atom number of 1-5; the second compound is a nitrile compound. The lithium ion battery electrolyte provided by the embodiment of the invention can eliminate HF and H2O generated under a high-temperature condition, can effectively prevent the HF and H2O from attacking CEI and the surface of a positive electrode material, and improves the stability of a positive electrode interface at a high temperature, so that the thermal stability of a lithium ion battery is improved, and meanwhile, the lithium ion battery can keep good electrochemical performance.
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Bibliography: | Application Number: CN202310308312 |