Method for preparing gel polymer lithium ion battery
A lithium-ion battery, gel polymer technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problems of complex plasticizer extraction process, decreased battery yield, easy to produce micro-short circuit, etc. Ionic conduction, cost reduction, effect of increasing randomness
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[0046] Prepare a kind of gel polymer lithium-ion battery, its preparation process is as follows figure 1 As shown, the materials and components are as follows:
[0047] Cathode, LiCoO 2 : Acetylene carbon black conductive agent: PVDF binder (mass ratio) = 96: 1.6: 2.4; positive current collector is aluminum foil.
[0048] Negative electrode, 96% artificial graphite: SBR binder: sodium carboxymethyl cellulose (mass ratio) = 96:2.5:1.5; the negative electrode current collector is copper foil.
[0049] Separator, 39.5% porosity polyolefin separator, thickness 12 μm.
[0050] Liquid electrolyte, EC: DEC: PC (mass ratio) = 1: 1: 0.2, LiFP 6 = 1M.
[0051] P(VDF-HFP) solution, P(VDF-HFP):acetone (mass ratio)=1:13.
[0052] TBT precursor solution (taking the amount of P(VDF-HFP) as 1), TBT:AcAc:n-butanol (mass ratio)=0.34:0.1:4.
[0053] Catalyst (TBT amount is 1), HCl: H 2 O: acetone (mass ratio) = 0.1:2:10.
[0054] Prepare liquid electrolyte, P(VDF-HFP) solution, TBT precu...
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