Electrolyte of power lithium ion secondary battery
A secondary battery, lithium-ion technology, applied in the field of electrolyte, can solve the problems of component ratio not optimized in series, poor high-temperature cycle performance, small application range, etc., to achieve improved baking, good high and low temperature and rate performance, slow down effect of effect
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Embodiment 1
[0020] The electrolytic solution of a kind of power lithium ion secondary battery of the present invention is formulated by electrolyte, main solvent and additive, and electrolyte is made of lithium hexafluorophosphate 8~13% and lithium dioxalate borate (LIBOB) 3~7%, and main solvent is made of Dimethyl carbonate (DMC) 28.0%-32.0%, ethyl methyl carbonate (EMC) 8.0%-13.0%, ethylene carbonate (EC) 5.0%-8.0% and propylene carbonate (PC) 4.0%-6.0% , the additives consist of ethylene sulfite (ES) 1.5% to 2.5%, vinylene carbonate (VC) 1.5% to 2.5%, 1,3-propane sultone (PS) 0.8% to 1.5%, anisole 0.2 %~0.4%, biphenyl (BP) 0.8%~1.5%, adiponitrile 0.01%~1.5%, 1-4-butylene diester (GBL) 0.8%~1.5% and cyclohexylbenzene (CHB) 0.8~1.5% %constitute.
Embodiment 2
[0022] The electrolytic solution of a kind of power lithium ion secondary battery of the present invention is formulated by electrolyte, main solvent and additive, and electrolyte is made of lithium hexafluorophosphate 10~11% and lithium dioxalate borate (LIBOB) 4~8%, and main solvent is made of Dimethyl carbonate (DMC) 30%, ethyl methyl carbonate (EMC) 10-11%, ethylene carbonate (EC) 6.0%-9.0% and propylene carbonate (PC) 5.0%-7.0%, the additive consists of Ethyl sulfate (ES) 2%, vinylene carbonate (VC) 2%, 1,3-propane sultone (PS) 1.0%, anisole 0.3%, biphenyl (BP) 1.0%, adiponitrile 0.01% to 1%, 1.0% of 1-4-butanediol (GBL) and 1.0% of cyclohexylbenzene (CHB).
Embodiment 3
[0023] Embodiment 3: the electrolytic solution of a kind of power lithium ion secondary battery of the present invention is formulated by electrolyte, main solvent and additive, and electrolyte is made of lithium hexafluorophosphate 10% and lithium dioxalate borate (LIBOB) 8%, and main solvent is made of Dimethyl carbonate (DMC) 35%, ethyl methyl carbonate (EMC) 11%, ethylene carbonate (EC) 9.0% and propylene carbonate (PC) 7.0%, the additive is ethylene sulfite (ES) 2% , vinylene carbonate (VC) 2%, 1,3-propane sultone (PS) 1.0%, anisole 0.3%, biphenyl (BP) 1.0%, adiponitrile 1%, 1-4-butane Composed of diester (GBL) 1.0% and cyclohexylbenzene (CHB) 1.0%.
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