Method for improving wettability of electrode plates of lithium-ion battery
A lithium-ion battery and pole piece technology, applied in electrode manufacturing, electrode rolling/calendering, etc., can solve the problems of poor battery rate performance and low temperature performance, long soaking time, unfavorable electrolyte soaking, etc., and achieve favorable soaking , Improve the overall performance, not easy to deform
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Embodiment 1
[0017] A method for improving the wettability of lithium-ion battery pole pieces, comprising the preparation of positive and negative pole pieces. The preparation of positive and negative pole pieces includes the following steps: coating→drying→rolling→slitting, before rolling, on the mirror surface Spray one layer of anti-sticking coating on the rolling roller, and described anti-sticking coating is made by following method:
[0018] (1) High-temperature degreasing: After baking the mirror roller at 450°C for 6 hours, clean the surface with alcohol.
[0019] (2) Surface pretreatment: Phosphating treatment is carried out on the surface of the mirror rolling roller in step (1).
[0020] (3) Water curtain spraying: mix Fluorotron PTFE, silicon nitride, alumina, curing agent VM7799 and water to obtain a slurry, and spray the slurry evenly on the surface of the mirror roller, where Fluorotron PTFE: Nitrogen Silicon oxide: aluminum oxide: curing agent VM7799: water = 20: 10: 10: 1...
Embodiment 2
[0024] A method for improving the wettability of lithium-ion battery pole pieces, comprising the preparation of positive and negative pole pieces. The preparation of positive and negative pole pieces includes the following steps: coating→drying→rolling→slitting, before rolling, on the mirror surface Spray one layer of anti-sticking coating on the rolling roller, and described anti-sticking coating is made by following method:
[0025] (1) High-temperature degreasing: After baking the mirror roller at 460°C for 5 hours, clean the surface with alcohol.
[0026] (2) Surface pretreatment: Phosphating treatment is carried out on the surface of the mirror rolling roller in step (1).
[0027] (3) Water curtain spraying: mix Fluorotron PTFE, silicon nitride, alumina, curing agent VM7799 and water to obtain a slurry, and spray the slurry evenly on the surface of the mirror roller, where Fluorotron PTFE: Nitrogen Silicon oxide: alumina: curing agent VM7799: water = 22:11:11:16:42, the ...
Embodiment 3
[0031] A method for improving the wettability of lithium-ion battery pole pieces, comprising the preparation of positive and negative pole pieces. The preparation of positive and negative pole pieces includes the following steps: coating→drying→rolling→slitting, before rolling, on the mirror surface Spray one layer of anti-sticking coating on the rolling roller, and described anti-sticking coating is made by following method:
[0032] (1) High-temperature degreasing: After baking the mirror roller at 500°C for 4 hours, clean the surface with alcohol.
[0033] (2) Surface pretreatment: Phosphating treatment is carried out on the surface of the mirror rolling roller in step (1).
[0034] (3) Water curtain spraying: Mix Fluorotron PTFE, silicon nitride, alumina, curing agent VM7799 and water to obtain a slurry, and spray the slurry evenly on the surface of the mirror roller, where Fluorotron PTFE: Nitrogen Silicon oxide: aluminum oxide: curing agent VM7799: water = 25: 12: 12: 2...
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