Electrolyte with high flame retardation performance and electrochemical performance and lithium ion battery
A lithium-ion battery and electrolyte technology, applied in the field of lithium-ion batteries, can solve the problems of degraded battery electrochemical performance, electrochemical performance damage, low flame retardant efficiency, etc., and achieve excellent battery performance, overcome impact, and improve safety Effect
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Embodiment 1
[0063] An electrolyte solution for a lithium-ion battery with high flame retardancy and electrochemical performance described in this embodiment, the electrolyte comprises a solvent (EC+DEC (1:2 mass ratio), a lithium salt (Li PF 6 ), a flame retardant and an additive, the amount of the lithium salt is 1mol / L, the amount of the flame retardant dimethyl phosphonate accounts for 10% of the total mass of the electrolyte, and the additive difluoropropylene carbonate The amount of ester accounts for 5% of the total mass of the electrolyte.
[0064] Lithium-ion batteries were prepared using the above electrolytic solutions by conventional methods.
Embodiment 2
[0066] A lithium-ion battery electrolyte with high flame retardancy and electrochemical performance described in this embodiment, the electrolyte includes a solvent (EC+DEC (1:2 mass ratio), lithium salt (LiPF 6 ), a flame retardant and an additive, the amount of the lithium salt is 1mol / L, the amount of the flame retardant dimethyl ethyl phosphate accounts for 15% of the total mass of the electrolyte, and the additive difluoroethylene carbonate The amount of ester accounts for 4% of the total mass of the electrolyte.
[0067] Lithium-ion batteries were prepared using the above electrolytic solutions by conventional methods.
Embodiment 3
[0069] A lithium-ion battery electrolyte with high flame retardancy and electrochemical performance described in this embodiment, the electrolyte includes a solvent (EC+DEC (1:2 mass ratio), lithium salt (LiPF 6 ), a flame retardant and an additive, the amount of the lithium salt is 0.8mol / L, the amount of the flame retardant tributyl phosphate accounts for 20% of the total mass of the electrolyte, and the additive methyl monofluoroacetate The dosage accounts for 10% of the total mass of the electrolyte.
[0070] Lithium-ion batteries were prepared using the above electrolytic solutions by conventional methods.
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