Lithium ion battery pole piece processing method
A lithium ion battery and a processing method technology are applied in the field of lithium ion battery pole piece processing for improving the wettability and liquid absorption of the lithium ion battery pole piece, and can solve the problems of poor wettability and liquid absorption of the battery pole piece, and achieve good performance, improve liquid absorption performance, improve the effect of adhesion
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[0021] Example 1: Place the cold-pressed cathode electrode piece in the figure 1 On the guide roller 1 of the device shown, two corona treatment machines 2 are respectively located directly above and directly below the cathode electrode piece. The cathode pole piece passes through the corona processor 2 under the traction of the guide roller 1. Both surfaces of the cathode pole piece are applied with high voltage alternating frequency voltage, which generates a large amount of low-temperature plasma to bombard the surface of the material, and enters the molecular structure of the material to make the material The surface molecules are polarized, thereby increasing the surface energy of the pole piece. At the same time, it promotes the rupture of chemical bonds to cause more hydrophilic atom groups or functional groups such as hydroxyl groups, carbon groups and hydrogen peroxide bonds, so as to improve the wettability of the electrolyte to the pole piece and improve the absorptio...
Example Embodiment
[0023] Example 2: Place the cut cathode electrode piece in the figure 2 On the guide roller 1 of the device shown, the corona treatment machine 2 is located directly above the cathode electrode piece. The cathode pole piece passes through the corona treatment machine 2 under the traction of the guide roller 1. The surface of the cathode pole piece close to the corona treatment machine 2 is applied with a high voltage alternating frequency voltage, which generates a large amount of low-temperature plasma to bombard the surface of the material and enter the molecular structure of the material , Polarize the surface molecules of the material, thereby increasing the surface energy of the pole piece. At the same time, it promotes the rupture of chemical bonds to cause more hydrophilic atom groups or functional groups such as hydroxyl groups, carbon groups and hydrogen peroxide bonds, so as to improve the wettability of the electrolyte to the pole piece and improve the absorption of...
Example Embodiment
[0025] Example 3: Place the cathode electrode piece welded with the lug on the figure 1 On the guide roller 1 of the device shown, the corona treatment machine 2 is respectively located directly above and directly below the cathode electrode piece. The cathode pole piece passes through the corona processor 2 under the traction of the guide roller 1. Both surfaces of the cathode pole piece are applied with high voltage alternating frequency voltage, which generates a large amount of low-temperature plasma to bombard the surface of the material, and enters the molecular structure of the material to make the material The surface molecules are polarized, thereby increasing the surface energy of the pole piece. At the same time, it promotes the rupture of chemical bonds to cause more hydrophilic atom groups or functional groups such as hydroxyl groups, carbon groups and hydrogen peroxide bonds, so as to improve the wettability of the electrolyte to the pole piece and improve the abso...
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