Lithium ion battery amide-type additive having film-forming and stabilizing functions and electrolyte containing same
A technology of lithium-ion batteries and film-forming additives, applied in the field of lithium-ion batteries, can solve the problems of high price and harsh preparation conditions, and achieve the effects of inhibiting reactions, improving charge-discharge efficiency and cycle life
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Embodiment 1
[0015] In a high-purity argon atmosphere glove box, mix ethylene carbonate (EC), ethyl methyl carbonate (EMC) and dimethyl carbonate (DMC) at a weight ratio of EC:EMC:DMC=1:1:1 , using lithium hexafluorophosphate as the lithium salt to prepare an electrolyte solution with a lithium salt concentration of 1mol / L, and adding a film-forming additive nicotinamide at a concentration of 0.1wt.%.
Embodiment 2
[0019] The preparation method of the electrolyte is the same as in Example 1, except that 0.1 wt.% isonicotinamide is added to the electrolyte.
Embodiment 3
[0021] The preparation method of the electrolyte is the same as in Example 1, except that 2wt.% of 2-pyridinecarboxamide is added to the electrolyte.
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