Electrolyte and lithium ion battery
An electrolyte and lithium salt technology, which is applied in the field of electrolyte and lithium-ion batteries, can solve the problems of reduced battery performance, lifespan, and poor stability
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Embodiment 1
[0058] Electrolyte preparation
[0059] Under the inert gas (nitrogen) atmosphere that moisture is lower than 5ppm, ethylene carbonate (EC) and ethyl methyl carbonate (EMC) are mixed by mass ratio 3:7 and prepare non-aqueous solvent 1000mL, will Add lithium hexafluorophosphate into the aforementioned non-aqueous solvent and mix evenly, so that the added lithium salt is completely dissolved. Then add vinylene carbonate (VC) and 1,3-propane sultone (PS) and mix well to obtain the electrolyte. In the resulting electrolyte, The mass percentage in the electrolyte is 1.75%, the mass percentage of lithium hexafluorophosphate is 11.25%; the mass percentage of vinylene carbonate (VC) is 1%, 1,3-propane sultone ( The mass percent content of PS) in the electrolyte solution is 1%, and the balance is non-aqueous solvent.
[0060] Li-ion battery preparation
[0061] Preparation of the positive plate
[0062] Mix the positive electrode active material lithium nickel cobalt manganese ox...
Embodiment 2
[0070] Electrolyte preparation
[0071] Under the inert gas (nitrogen) atmosphere that moisture is lower than 5ppm, ethylene carbonate (EC) and ethyl methyl carbonate (EMC) are mixed by mass ratio 3:7 and prepare non-aqueous solvent 1000mL, will Add lithium hexafluorophosphate into the aforementioned non-aqueous solvent and mix evenly, so that the added lithium salt is completely dissolved. Then add vinylene carbonate (VC) and 1,3-propane sultone (PS) and mix well to obtain the electrolyte. In the resulting electrolyte, The mass percentage in the electrolyte is 1.87%, the mass percentage of lithium hexafluorophosphate is 11.25%; the mass percentage of vinylene carbonate (VC) is 1%, 1,3-propane sultone ( The mass percent content of PS) in the electrolyte solution is 1%, and the balance is non-aqueous solvent.
[0072] Li-ion battery preparation
[0073] The method for preparing the lithium-ion battery in Example 1 is roughly the same, except that the electrolyte used in t...
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