Electrolyte and lithium ion battery containing same
An electrolyte and electrolyte technology, applied in the field of lithium-ion batteries, can solve the problems of deteriorating positive electrode impedance, poor power performance of lithium-ion batteries, deteriorating high-temperature gas production of lithium-ion batteries, etc., and achieves low high-temperature storage performance, good high-temperature cycle performance, The effect of good high temperature performance and low temperature performance
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[0096] Example 1-21
[0097] The lithium ion battery containing the electrolyte of the present invention of Examples 1-21 was prepared according to the following method.
[0098] (1) Preparation of positive pole piece and negative pole piece
[0099] LiNi 0.5 Mn 0.3 Co 0.2 O 2 , Conductive agent acetylene black, binder polyvinylidene fluoride (PVDF) according to the weight ratio of 94:3:3 in the N-methylpyrrolidone solvent system, fully stirred and mixed uniformly, coated on the Al foil, dried and cooled Press to obtain a positive pole piece.
[0100] The negative active material artificial graphite, conductive agent acetylene black, binder styrene butadiene rubber (SBR), thickener sodium carbon methyl cellulose (CMC) in a deionized water solvent system with a weight ratio of 95:2:2:1 After being fully stirred and mixed evenly in the medium, it is coated on the Cu foil, dried, and cold pressed to obtain a negative pole piece.
[0101] (2) Preparation of electrolyte
[0102] In a glove ...
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