Thermal conductive pole piece and preparation method and use thereof
A pole piece and thermally conductive coating technology, applied in battery electrodes, non-aqueous electrolyte battery electrodes, structural parts, etc., can solve problems such as affecting the heat dissipation effect of the pole piece, and achieve improved heat dissipation effect, strong manufacturability, and thermal conductivity. high effect
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[0069] Example 1
[0070] A method for preparing a thermally conductive pole piece includes the following steps:
[0071] (1) Mix 0.6g silane coupling agent, 0.6g epoxy resin and 100g NMP at 1200rpm for 2h, then add 2.2g multi-walled carbon nanotubes (length is 2μm, diameter is 10nm, aspect ratio is 200). Sand and mix for 1 hour to obtain a thermal conductivity slurry with a viscosity of 220 mPa.s;
[0072] (2) Coat the thermally conductive paste on both sides of the positive electrode plate respectively by gravure. The side with the positive active material coverage of 92% is marked as side A, and the side with the positive active material coverage of 80% is marked as side B. The thickness of the thermally conductive coating on the A side is 1 μm and the areal density is 0.08 mg / cm 2 , The thickness of the thermally conductive coating on the B side is 1μm, and the areal density is 0.08mg / cm 2 , Dried at 120°C, with a running speed of 1m / min, and cold pressed at a pressure of 210T t...
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[0073] Example 2
[0074] The difference from Example 1 is that the multi-walled carbon nanotubes in step (1) are replaced with the same amount of graphene, and the size of the graphene is 5 μm.
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[0075] Example 3
[0076] The difference from Example 1 is that the multi-walled carbon nanotubes in step (1) are replaced with the same amount of graphene, and the size of the graphene is 1 μm.
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