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Preparation method of efficient electrode plate

An electrode plate and high-efficiency technology, applied in the field of electrode plates, can solve the problems of inability to poison electrodes, decrease in chlorine production efficiency, and purification, and achieve the effects of slowing down diffusion and penetration, prolonging service life, and improving oxygen evolution potential

Active Publication Date: 2021-05-07
宜兴艾科森生态环卫设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Sewage treatment in ecological sanitation equipment is usually dominated by the traditional A / O process, and there are not many studies on electrochemical treatment of sewage. However, the efficiency of chlorine production will decrease with the extension of use time during the use of conventional active coating electrodes. In the case of rapid decline, although the coating loss rate is not large in the short term, the poisoning effect of sewage on the active coating prevents the electrode from purifying the water quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: a kind of preparation method of high-efficiency electrode plate,

[0020] (1) Preparation of the base material: select a titanium plate made of TA1 as the base material, and degrease the base material;

[0021] (2) Surface treatment of the base material: Sand wash the base material after degreasing treatment, use 24-mesh white corundum for sand washing, wash and dry after sand washing, pickling after washing and drying, pickling When using 10% oxalic acid solution to pickle for 60 minutes, after pickling, wash and dry to obtain the pretreated substrate;

[0022] (3) Coating the base layer: brush the precursor solution A on the surface of the pretreated substrate, the precursor solution A is metal Ir and Ta, the molar ratio of Ir:Ta is 1.8:1, and the brushing amount is 1g / m 2 , After brushing, it is surface-dried at 60°C and then placed in a high-temperature furnace for sintering to obtain the base substrate. The sintering temperature in the high-temperatu...

Embodiment 2

[0026] Embodiment 2: a kind of preparation method of high-efficiency electrode plate,

[0027] (1) Preparation of the base material: select a titanium plate made of TA2 as the base material, and degrease the base material;

[0028] (2) Surface treatment of the base material: Sand wash the base material after degreasing treatment, use 24-mesh white corundum for sand washing, wash and dry after sand washing, pickling after washing and drying, pickling When using 12% oxalic acid solution to pickle for 45min, after pickling, wash and dry to obtain the pretreated substrate;

[0029] (3) Coating the base layer: Brush the precursor solution A on the surface of the pretreated substrate, the precursor solution A is metal Ir and Ta, the molar ratio of Ir:Ta is 2.2:1, and the brushing amount is 3g / m 2 , After brushing, it is surface-dried at 80°C and then placed in a high-temperature furnace for sintering to obtain the base substrate. The sintering temperature in the high-temperature fu...

Embodiment 3

[0033] Embodiment 3: a kind of preparation method of high-efficiency electrode plate,

[0034] (1) Preparation of the base material: select a titanium plate made of TA2 as the base material, and degrease the base material;

[0035] (2) Surface treatment of the base material: Sand wash the base material after degreasing treatment, use 24-mesh white corundum for sand washing, wash and dry after sand washing, pickling after washing and drying, pickling When using 15% oxalic acid solution to pickle for 30~60min, after pickling, wash and dry to obtain the pretreated substrate;

[0036] (3) Coating the base layer: Brush the precursor solution A on the surface of the pretreated substrate, the precursor solution A is metal Ir and Ta, the molar ratio of Ir:Ta is 2.6:1, and the brushing amount is 5g / m 2 , After brushing, it is surface-dried at 100°C and then placed in a high-temperature furnace for sintering to obtain the base substrate. The sintering temperature in the high-temperatur...

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Abstract

The invention discloses a preparation method of an efficient electrode plate. The preparation method comprises the following steps: (1) preparing a base material; (2) carrying out surface treatment of the base material; (3) coating a substrate layer; (4) coating a middle layer; (5) coating a surface layer; and (6) sintering. A precursor solution A is used as the substrate layer to seal the bottom of the substrate, so that the binding force between the active components of the substrate layer and the substrate is effectively improved, the conductivity and passivation resistance of the substrate are enhanced, and the service life of the electrode is prolonged in the use process. A precursor solution B is adopted as the middle layer, so that on one hand, cracks of the coating are reduced, diffusion and permeation of oxygen generated in the use process to the substrate are further slowed down, and generation of a high-resistance layer is reduced or hindered; and on the other hand, the oxygen evolution potential of the electrode is improved. A precursor solution C is adopted as the surface layer, so that the poisoning effect of sewage on the active coating can be effectively avoided.

Description

technical field [0001] The invention relates to the field of electrode plates, in particular to a preparation method of a high-efficiency electrode plate. Background technique [0002] Sewage treatment in ecological sanitation equipment is usually dominated by the traditional A / O process, and there are not many studies on electrochemical treatment of sewage. However, the efficiency of chlorine production will decrease with the extension of use time during the use of conventional active coating electrodes. In the case of a rapid decline, although the loss rate of the coating is not large in the short term, the poisoning effect of the sewage on the active coating prevents the electrode from purifying the water quality. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing an efficient electrode plate. [0004] The innovation of the present invention is that in the present invention, the precursor liquid A is used as the...

Claims

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Application Information

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IPC IPC(8): C02F1/461
CPCC02F1/46109C02F2001/46138C02F2001/46142
Inventor 徐霞吴丽云潘准峰
Owner 宜兴艾科森生态环卫设备有限公司
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