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Preparation method of precious metal anode for electrolytic copper foil

A technology of electrolytic copper foil and precious metals, applied in the electrolysis process, electroforming, etc., can solve the problems of abnormal anode failure, titanium substrate oxidation, high current density, etc., and achieve the effects of inhibiting titanium substrate passivation, uniform dispersion, and reducing voltage

Pending Publication Date: 2022-03-15
XIAN TAIJIN INDAL ELECTROCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, due to the high current density required under the electrolytic copper foil working condition, the anode of the iridium-tantalum system is prone to oxygen seepage, which leads to the oxidation of the titanium matrix and causes abnormal failure of the anode.

Method used

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  • Preparation method of precious metal anode for electrolytic copper foil
  • Preparation method of precious metal anode for electrolytic copper foil
  • Preparation method of precious metal anode for electrolytic copper foil

Examples

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preparation example Construction

[0039] In the preparation method of the noble metal anode for electrolytic copper foil provided by the present invention, the coating of the titanium anode is an Ir-Ta system noble metal coating containing a platinum intermediate layer, and the specific preparation steps are as follows:

[0040] S1. Pretreatment of the surface of the titanium substrate:

[0041] S1.1. Perform surface degreasing and sandblasting on the titanium substrate;

[0042] S1.2. Carry out thermal correction treatment to the titanium substrate after sandblasting;

[0043] S1.3. Soak the corrected titanium substrate in dilute hydrochloric acid with a concentration of 3-15% for 8-24 hours, and then boil it in an oxalic acid solution with a concentration of 5-10% for 0.5-3 hours;

[0044] S1.4, cleaning and drying the titanium substrate;

[0045] S2. Preparation of primer solution A: Accurately weigh a certain amount of tantalum ethoxide solution and dissolve it in n-butanol solvent, stir at room temperat...

Embodiment 1

[0049] The scanning electron microscope image of the electrolytic copper foil anode prepared by the method of preparing the noble metal anode for electrolytic copper foil in this example can be found in figure 1 , the coating of the titanium anode is to add an Ir-Ta system noble metal coating containing a platinum intermediate layer, and the preparation method specifically includes:

[0050] S1. Pretreatment of the surface of the titanium substrate:

[0051] S1.1. Perform surface degreasing and sandblasting on the titanium substrate;

[0052] S1.2. Carry out thermal correction treatment to the titanium substrate after sandblasting;

[0053] S1.3. Soak the titanium matrix with the corrected shape in dilute hydrochloric acid with a concentration of 3-15% for 8-24 hours, and then boil it in an oxalic acid solution with a concentration of 5-10% for 0.5-3 hours;

[0054] S1.4, cleaning and drying the titanium substrate;

[0055] S2. Preparation of primer solution A: Accurately w...

Embodiment 2

[0059] The scanning electron microscope image of the electrolytic copper foil anode prepared by the method of preparing the noble metal anode for electrolytic copper foil in this example can be found in figure 2 , the coating of the titanium anode is to add an Ir-Ta system noble metal coating containing a platinum intermediate layer, and the preparation method specifically includes:

[0060] S1. Pretreatment of the surface of the titanium substrate:

[0061] S1.1. Perform surface degreasing and sandblasting on the titanium substrate;

[0062] S1.2. Carry out thermal correction treatment to the titanium substrate after sandblasting;

[0063] S1.3. Soak the titanium matrix with the corrected shape in dilute hydrochloric acid with a concentration of 3-15% for 8-24 hours, and then boil it in an oxalic acid solution with a concentration of 5-10% for 0.5-3 hours;

[0064] S1.4, cleaning and drying the titanium substrate;

[0065] S2. Preparation of primer solution A: Accurately ...

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Abstract

The invention belongs to the technical field of electrolytic copper foils, and relates to a preparation method of a precious metal anode for electrolytic copper foils. The method comprises the following steps: 1) pretreating the surface of a titanium substrate; 2) preparing a base solution: sequentially dissolving a tantalum source with the molar percentage of 20-40% and a platinum source with the molar percentage of 60-90% in an organic solvent, and stirring at normal temperature to form the base solution; 3) preparing an active liquid: mixing and dissolving 60-80 mol% of an iridium source and 20-40 mol% of a tantalum source in an organic solvent, and stirring at normal temperature to form the active liquid; and 4) brushing and sintering. According to the invention, the platinum-containing intermediate layer with relatively good conductivity is introduced into the traditional iridium-tantalum system coating, so that the electron transmission efficiency between the substrate and the coating can be effectively improved, titanium substrate passivation caused by charge accumulation is inhibited, and the service life of an anode is prolonged.

Description

technical field [0001] The invention belongs to the technical field of electrolytic copper foil, relates to a noble metal anode, in particular to a preparation method of a noble metal anode for electrolytic copper foil. Background technique [0002] Electrolytic copper foil is an important material for the manufacture of copper clad laminates, printed circuit boards, and lithium-ion batteries. In the rapid development of today's electronic information industry, electrolytic copper foil plays an important role in signal and power transmission and communication of electronic products. In the electrolytic copper foil production equipment, the anode material is one of the most critical components; after a series of changes in the selection of anode materials such as traditional soluble anodes and lead anodes, the dimensional stability titanium anode coated with precious metals shows more excellent performance. Use performance. [0003] In the copper foil electrolysis process, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D1/04
CPCC25D1/04
Inventor 闫爱玲冯庆郝小军贾波柴作强
Owner XIAN TAIJIN INDAL ELECTROCHEM TECH
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