A kind of high-voltage lithium-ion battery non-aqueous electrolyte
A lithium-ion battery and non-aqueous electrolyte technology, applied in the field of lithium-ion batteries, can solve the problems of high production environment and equipment requirements, cumbersome lithium-ion battery manufacturing process, increased costs, etc., to improve rate performance and inhibit decomposition reactions , the effect of reducing the interface impedance
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[0024] The preparation method of the electrolyte of Examples 1-12 and Comparative Examples 1-5 is the same as that of the lithium-ion battery, but the additives and their proportions are different.
[0025] 1) Preparation of electrolyte
[0026] Mix ethylene carbonate (EC), diethyl carbonate (DEC) and ethyl methyl carbonate (EMC) according to the mass ratio of EC:DEC:EMC=3:2:5, and then add lithium hexafluorophosphate (LiPF6) to the molar concentration is 1.1mol / L, and the additives include conventional additives and high-voltage functional additives. The types and contents of additives in the electrolyte are shown in Table 1, wherein the ratio of additives is the ratio of the total weight of the electrolyte.
[0027] Table 1 embodiment 1-12 and the additive of comparative example 1-5 and content thereof
[0028]
[0029] 2) Preparation of positive electrode sheet
[0030] Mix positive electrode active material nickel cobalt lithium manganate (LiNi0.5Co0.2Mn0.3), conducti...
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