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Regeneration treatment liquid of titanium anode for electrolytic copper foil, preparation method of regeneration treatment liquid and titanium anode regeneration method

A technology for regenerating treatment liquid and electrolytic copper foil, which is applied in the field of regeneration of titanium anodes, and can solve problems such as harmful iridium-tantalum oxide coatings, low scaling removal efficiency, and environmental pollution

Active Publication Date: 2018-12-18
JIANGSU MINGFENG ELECTRONIC MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both the acid cooking method and the alkali cooking method treat the scale layer at high temperature, and the operating environment is harsh. Due to the use of acid or alkali, it is easy to cause environmental pollution, and the scale removal efficiency is low. At the same time, strong acid or strong alkali will also corrode iridium-tantalum oxide. material coating, causing great damage to the anode
A method for removing scaling on the surface of titanium anodes for electrolytic copper foil (CN104120460A) discloses a method of first using NaCl+CaCl 2 After soaking in the solution, the reducing agent Na 2 SO 3 Solution processing method, but this processing method also has the problem of endangering the iridium-tantalum oxide coating

Method used

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  • Regeneration treatment liquid of titanium anode for electrolytic copper foil, preparation method of regeneration treatment liquid and titanium anode regeneration method
  • Regeneration treatment liquid of titanium anode for electrolytic copper foil, preparation method of regeneration treatment liquid and titanium anode regeneration method

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Embodiment 1

[0013] Slowly dissolve sodium acetate in deionized water, slowly add an aqueous solution of ammonium acetate under stirring conditions, then add an aqueous solution of nonylphenol polyoxyethylene ether (NP-10), and mix well after stirring to obtain an electrolytic copper foil Use the regeneration treatment solution of titanium anode, the concentration of sodium acetate in the regeneration treatment solution is 30g / L, the concentration of ammonium acetate is 50g / L, and the concentration of nonylphenol polyoxyethylene ether (NP-10) is 0.01g / L. After cleaning the used titanium-based iridium-tantalum oxide coated titanium anode plate with a fouling layer on the surface with deionized water, place it in the regeneration treatment solution prepared at a temperature of 60°C, and place it under ultrasonic vibration After soaking for 60 minutes under the same conditions, the scale layer on the surface of the titanium-based iridium-tantalum oxide-coated titanium anode plate can be remove...

Embodiment 2

[0015] Slowly dissolve sodium acetate in deionized water, slowly add an aqueous solution of ammonium acetate under stirring conditions, then add an aqueous solution of nonylphenol polyoxyethylene ether (NP-10), and mix well after stirring to obtain an electrolytic copper foil Use the regeneration treatment solution of titanium anode, the concentration of sodium acetate in the regeneration treatment solution is 50g / L, the concentration of ammonium acetate is 100g / L, and the concentration of nonylphenol polyoxyethylene ether (NP-10) is 0.05g / L. After cleaning the used titanium-based iridium-tantalum oxide coated titanium anode plate with a fouling layer on the surface with deionized water, place it in the regeneration treatment solution prepared at a temperature of 50°C, and place it under ultrasonic vibration After soaking for 45 minutes under the same conditions, the scale layer on the surface of the titanium-based iridium-tantalum oxide coated titanium anode plate can be remov...

Embodiment 3

[0017] Slowly dissolve sodium acetate in deionized water, slowly add an aqueous solution of ammonium acetate under stirring conditions, then add an aqueous solution of nonylphenol polyoxyethylene ether (NP-10), and mix well after stirring to obtain an electrolytic copper foil Use the regeneration treatment solution of titanium anode, the concentration of sodium acetate in the regeneration treatment solution is 75g / L, the concentration of ammonium acetate is 150g / L, and the concentration of nonylphenol polyoxyethylene ether (NP-10) is 0.1g / L. After cleaning the used titanium-based iridium-tantalum oxide coated titanium anode plate with a fouling layer on the surface with deionized water, place it in the regeneration solution prepared at a temperature of 45°C, and under the condition of ultrasonic vibration After soaking for 30 minutes, the scaling layer on the surface of the titanium-based iridium-tantalum oxide-coated titanium anode plate can be removed, and the regeneration tr...

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Abstract

The invention provides regeneration treatment liquid of a titanium anode for an electrolytic copper foil, a preparation method of the regeneration treatment liquid and a titanium anode regeneration method. The regeneration liquid comprises alkali metal salt of acetic acid, ammonium acetate and a surfactant nonylphenol ethoxylate (NP-10). The concentration of the alkali metal salt of the acetic acid is 30-100 g / L, the concentration of the ammonium acetate is 50-150 g / L, and the concentration of the surfactant nonylphenol ethoxylate (NP-10) is 0.01-0.5 g / L. The titanium anode regeneration methodcomprises the following steps: cleaning a titanium anode plate with deionized water, then placing the titanium anode plate in the regeneration liquid, and soaking the titanium anode plate at the temperature of 20-60 DEG C under the condition of ultrasonic vibration. The method is simple to operate, the surface of the regenerated titanium anode plate can recover to the original state, and the regenerated titanium anode plate can completely meet the requirement of the electrolytic copper foil for a lithium ion battery, and can also meet the requirement of the electrolytic copper foil for a printed circuit board.

Description

technical field [0001] The invention relates to a regeneration technology of a titanium anode for electrolytic copper foil, in particular to a regeneration treatment solution for a titanium anode for electrolytic copper foil, a preparation method thereof, and a regeneration method for a titanium anode. Background technique [0002] In the current electrolytic copper foil production process, because the current load of the cathode and anode is larger than that of other electrolytic industries, the anode current density can reach 100A / dm 2 , the reaction conditions are relatively harsh. Since the electrolytic manufacturing of copper foil is carried out in an acidic system, and the anode emits oxygen, the anode used in this process generally uses an oxygen-evolving titanium-based iridium-tantalum oxide coating anode (Ti / IrO) with excellent corrosion resistance and electrocatalytic performance. 2 +Ta 2 o 5 ). During the electrolysis process, the surface of the anode is slowl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/24
CPCC23G1/24
Inventor 陈智栋吴敏娴王钰如陈岢豪张凯淇张亚婷
Owner JIANGSU MINGFENG ELECTRONIC MATERIALS CO LTD
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