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Cathode roller polishing method applied to electrolytic copper foil

A technology of electrolytic copper foil and cathode roller, which is applied in the direction of polishing composition, chemical instruments and methods, etc., can solve the problems of surface damage of cathode roller and difficulty in keeping the surface of cathode roller flat and consistent, so as to improve surface consistency and shorten polishing time , the effect of reducing damage

Inactive Publication Date: 2020-04-17
HUBEI ZHONGYI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a cathode roll polishing method applied to electrolytic copper foil, which is used to solve the problems in the prior art that mechanical polishing is difficult to keep the surface of the cathode roll flat and consistent, and is easy to cause damage to the surface of the cathode roll

Method used

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  • Cathode roller polishing method applied to electrolytic copper foil

Examples

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Comparison scheme
Effect test

Embodiment 1

[0025] Ethanol and deionized water are mixed at a volume ratio of 1:1 as a solvent, citric acid, oxalic acid, succinic acid, sodium nitrate, and phenylacryltriazole are added to the solvent, and the polishing liquid is prepared after mixing evenly at 25°C. Citric acid concentration is 62g / L in the polishing liquid, and oxalic acid concentration is 58g / L, and succinic acid concentration is 0.62g / L, and sodium nitrate concentration is 1.6g / L, and benzotriazole concentration is 0.1g / L; The roller is first washed with alkali to remove oil, and then washed with water; immerse the cleaned cathode roller in the cathode roller polishing solution applied to electrolytic copper foil, and rotate and soak at 40°C for 3 minutes; take out the soaked cathode roller, and use a grinding wheel Perform mechanical polishing for 8 min.

Embodiment 2

[0027] Ethanol and deionized water are mixed at a volume ratio of 1:1 as a solvent, citric acid, oxalic acid, succinic acid, sodium nitrate, and phenylacryltriazole are added to the solvent, and the polishing liquid is prepared after mixing evenly at 25°C. In the polishing liquid, the concentration of citric acid is 65g / L, the concentration of oxalic acid is 60g / L, the concentration of succinic acid is 0.65g / L, the concentration of sodium nitrate is 2g / L, and the concentration of benzotriazole is 0.2g / L; First wash with alkali to remove oil, then wash with water; immerse the cleaned cathode roller in the cathode roller polishing solution applied to electrolytic copper foil, and rotate and soak at 40°C for 4 minutes; take out the soaked cathode roller and grind it with a grinding wheel Mechanical polishing 10min.

Embodiment 3

[0029] Ethanol and deionized water are mixed at a volume ratio of 1:1 as a solvent, citric acid, oxalic acid, succinic acid, sodium nitrate, and phenylacryltriazole are added to the solvent, and the polishing liquid is prepared after mixing evenly at 25°C. Citric acid concentration is 72g / L in the polishing liquid, and oxalic acid concentration is 63g / L, and succinic acid concentration is 0.74g / L, and sodium nitrate concentration is 2.4g / L, and benzotriazole concentration is 0.3g / L; The roller is first washed with alkali to remove oil, and then washed with water; immerse the cleaned cathode roller in the cathode roller polishing solution applied to electrolytic copper foil, and rotate and soak at 40°C for 4 minutes; take out the soaked cathode roller, and use a grinding wheel Perform mechanical polishing for 10 min.

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Abstract

The invention discloses a cathode roller polishing method applied to electrolytic copper foil. The cathode roller polishing method includes the steps of polishing solution preparation, ultrasonic washing, infiltration pre-polishing and grinding wheel polishing. A polishing solution is prepared through the step of evenly mixing citric acid, oxalic acid, succinic acid, sodium nitrate, benzotriazole,ethyl alcohol and deionized water to prepare the polishing solution. According to the cathode roller polishing method, by means of the manner of combining chemical pre-polishing with mechanical polishing, damage caused during cathode roller polishing is remarkably reduced, the cathode roller surface smoothness consistency is improved, and the surface roughness is improved.

Description

technical field [0001] The invention relates to the technical preparation field of electrolytic copper foil, in particular to a cathode roller polishing method applied to electrolytic copper foil. Background technique [0002] Nowadays, when preparing copper foil for lithium-ion battery electrodes, copper foil is often prepared by electrolysis, and the raw foil is deposited on the cathode roller. After preparing the raw foil for a long time, the surface of the cathode roller needs to be maintained to prevent Ensure the surface cleanliness of the cathode roller, so that the subsequent deposited film can maintain an excellent state. For the polishing process of the cathode roller, the surface of the cathode roller is generally directly mechanically polished by a grinding wheel grinding head in the prior art, but it is difficult to accurately control the polishing degree of the grinding wheel to the surface of the cathode roller when the existing grinding wheel grinding head is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B1/00C09G1/18
CPCB24B1/00C09G1/18
Inventor 万大勇文孟平陈多锋
Owner HUBEI ZHONGYI TECH