A kind of electrolytic solution for producing electrolytic copper foil and preparation method thereof for preventing anode fouling

Abstract

The invention discloses an electrolyte solution used for preventing the positive pole from scaling and producing electrolytic copper foil. An electrolyte solution body is a water solution dissolving copper sulfate, sulfuric acid and carboxylic acid, the content, calculated based on cupric ions, of copper sulfate in the electrolyte solution body is 60-90 g / L, the content of sulfate ions in the electrolyte solution body is 150-270 g / L, and a preparing method of the electrolyte solution for producing electrolytic copper foil mainly includes the steps of dissolving copper, filtering, purifying, adding carboxylic acid, mixing carboxylic acid uniformly and the like. According to the electrolyte solution used for preventing the positive pole from scaling and producing electrolytic copper foil, the surface of the electrolysis positive pole is effectively prevented from scaling in the copper foil production process, and the problems that due to positive pole scaling, a ti-based metal oxide positive pole loses efficacy in advance, and quality of electrolyzed copper foil descends seriously are solved.

Description

technical field [0001] The invention relates to an electrolytic solution for producing electrolytic copper foil and a preparation method thereof, in particular to an electrolytic solution for producing electrolytic copper foil for preventing anode fouling and a preparation method thereof. Background technique [0002] As we all know, electrolytic copper foil is to deposit metal copper foil on the surface of the cathode roller through the principle of electroplating. Although there are many types of electrolytic copper foil and each has its own characteristics, the manufacturing process is basically the same: that is, electrolytic copper or electrolytic copper Wire scraps of the same purity are used as raw materials, which are dissolved in sulfuric acid to make a copper sulfate solution. Using a metal roller as a cathode, metal copper is continuously electrolytically deposited on the surface of the cathode through electrolytic reaction, and at the same time, it is continuously...

AI Technical Summary

Problems solved by technology

Since titanium-based active metal oxide electrodes are generally used as electrolytic anodes for electrolytic copper foil, as the electrolysis time prolongs, the scaling layer on the surface of the active oxide coating becomes thicker and thicker, and is eventually covered by the scaling layer, which leads to There are two serious problems: (1) leading to premature failure of the titanium-based metal oxide anode; (2) causing uneven current distribution on the surface of the cathode, causing longitudinal texture of the copper foil, which seriously affects the quality of the copper foil

Although these methods can effectively remove the fouling layer on the surface of the anode, there are also the following problems, (1) the disassembly and assembly of the anode is all relatively loaded down with trivial details, which increases the production process and labor costs; (2) the chemical liquid cleaning process will cause certain damage to the anode damage, reduce the service life of the anode, and increase the use cost of the anode; (3) lead to the shutdown of the foil machine and affect the construction period; (4) the chemical liquid has strong corrosion and certain toxicity, and direct discharge will cause environmental pollution. Disposal Re-emission will increase the cost of the enterprise; (5) Frequent disassembly and assembly may introduce new impurities or pollutants into the foil machine, and seriously affect the quality of subsequent copper foil production

In addition, the above means did not fundamentally solve the problem of anode scaling, but only a remedial measure to remove it after serious anode scaling occurs