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Electrolytic anode plate and preparation method thereof

A technology for anode plates and substrates, applied in electrodes, electrolysis processes, electroforming, etc., can solve the problems of easy deactivation and corrosion of active materials, uneven distribution of active materials, short service life, etc., and achieve increased preparation costs and uniform distribution of activity , the effect of improving the service life

Inactive Publication Date: 2020-03-24
厦门佰事兴新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bonding force between the coating and the substrate made by sintering is poor, causing the coating to fall off easily, and due to the artificial coating and sintering for many times during coating, it is easy to make the distribution of active substances uneven, so that during electrolysis The active material is easily deactivated and corroded in the solution, resulting in a short service life

Method used

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  • Electrolytic anode plate and preparation method thereof

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Effect test

Embodiment 1

[0033] Embodiment 1: A method for preparing an electrolytic anode plate, which can improve the service life of the anode plate, such as figure 1 shown, including the following steps:

[0034] S1. Select a titanium plate as the substrate, and cut and process it into a substrate 1 according to requirements;

[0035] S2. Take a compound containing iridium as element 1, take a compound containing tantalum, a compound containing ruthenium or a compound containing tantalum mixed with a compound containing ruthenium as element 2, mix element 1 and element 2 uniformly and make a coating The target material; specifically, iridium oxide is selected for the compound containing iridium, tantalum oxide is selected for the compound containing tantalum, and ruthenium oxide is used for the compound containing ruthenium, and the coating target is made of powdery solid material, wherein, element one and element The weight ratio between the two is 1:1 to 1.5. In this embodiment, the element two...

Embodiment 2

[0042]Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step S4, the pre-sputtering is maintained for 3.5 minutes when the sputtering power value of the main sputtering is reached, so that the sputtering environment in the reaction chamber is stable, so that the main sputtering is carried out. Sputtering, and control the main sputtering at 60min, so as to obtain the iridium-tantalum coating 2 with a thickness of 1.8 μm, avoiding the waste caused by the over-thickness of the coating 2, increasing the cost of electrode preparation, and avoiding the residual stress of the coating 2. The binding force between the coating 2 and the substrate 1 is reduced to ensure a relatively high service life of the electrolytic anode plate. In the prepared coating 2, the sputtering amount of iridium oxide is 12g / m2, so as to maximize the electrode capacity of the coating 2, improve the electrode performance of the coating 2, and thereby increase the service life of ...

Embodiment 3

[0043] Embodiment three: the difference between this embodiment and embodiment one is that when magnetron sputtering is carried out in step S4, the sputtering amount of iridium oxide and tantalum oxide on the substrate 1 is 10g / m2, and the temperature of the control substrate 1 is at 480°C, so that the activity of iridium-tantalum is stable during sputtering, and the formed iridium-tantalum coating 2 has higher activity and longer life.

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Abstract

The invention discloses a preparation method of an electrolytic anode plate, and relates to the technical field of electrolytic electrodes. The preparation method of an electrolytic anode plate comprises the following steps of: S1, selecting a titanium plate as a substrate, and cutting and processing the titanium plate into the substrate as required; S2, taking an iridium-containing compound as anelement I, taking a tantalum-containing compound, a ruthenium-containing compound or a mixture of the tantalum-containing compound and the ruthenium-containing compound as an element II, and uniformly mixing the element I and the element II to prepare a coating target material; S3, pretreating the substrate, including washing, degreasing agent degreasing, ultrasonic cleaning, acid pickling, washing and alcohol washing in sequence; and S4, uniformly attaching and depositing the coating target material on the substrate through magnetron sputtering to form a coating, and performing cooling to obtain an electric anode plate. The iridium-tantalum coating is prepared through magnetron sputtering, the binding force of the coating and the titanium substrate is improved, falling is avoided, activity distribution of the iridium-tantalum coating on the titanium substrate is more uniform, and the effect of prolonging the service life of the iridium-tantalum coating is achieved.

Description

technical field [0001] The invention relates to the technical field of electrolysis electrodes, more specifically, it relates to an electrolysis anode plate and a preparation method thereof. Background technique [0002] Titanium anodes are used as oxygen evolution reaction electrodes in the production of copper foil or in the process of electrogalvanizing and tin plating of iron and steel. Titanium anodes usually consist of a substrate and a catalyst layer coated on the surface of the substrate. The substrate is usually made of valve-type metal titanium, and the catalyst layer is a few microns thick noble metal oxide (mainly composed of a mixture of iridium oxide and tantalum oxide). In the prior art, iridium oxide and tantalum oxide are generally coated on the anode plate by brushing and sintering to increase the service life of the anode. [0003] For example, the application publication number is CN109706513A, and the Chinese patent publication date is 2019.05.03 disclo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/08C25D1/04C25D17/10
CPCC23C14/08C23C14/3407C23C14/35C25D1/04C25D17/10
Inventor 廖龙辉罗文富
Owner 厦门佰事兴新材料科技有限公司
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