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Al (at) (TiB2+Ti4O7)-PbO2+CeO2 composite anode plate and preparation method thereof

A composite anode and composite plate technology, applied in electrodes, electrolytic coatings, coatings, etc., can solve the problems of metal Al acid resistance, alkali resistance, poor corrosion resistance, etc., and achieve the effects of low cost, wide adaptability and good conductivity

Pending Publication Date: 2021-12-24
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The acid resistance, alkali resistance and corrosion resistance of metal Al are poor, and there are many problems in using metal Al alone as the anode plate

Method used

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  • Al (at) (TiB2+Ti4O7)-PbO2+CeO2 composite anode plate and preparation method thereof
  • Al (at) (TiB2+Ti4O7)-PbO2+CeO2 composite anode plate and preparation method thereof
  • Al (at) (TiB2+Ti4O7)-PbO2+CeO2 composite anode plate and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A kind of core-shell structure Al@(TiB 2 +Ti 4 o 7 )-PbO 2 +CeO 2 Composite anode plates, such as figure 1 As shown, including Al-based metal plate substrate, TiB 2 +Ti 4 o 7 Ceramic interlayer, PbO 2 +CeO 2 Composite active catalytic layer, Al base metal plate is pure Al plate, thickness is 3mm, TiB 2 +Ti 4 o 7 The dusting thickness of the mixed powder is 1mm, and the total thickness of the composite anode plate is 6-8mm. The specific preparation process includes the following steps:

[0027] (1) Pretreatment of Al-based metal plate: Cut an aluminum plate with a thickness of 3 mm into a small sample of 60 mm × 30 mm with a shearing machine, and use a 16 mm benchtop drilling machine to polish the small sample to remove surface oxide film and impurities, and cut the small sample Ultrasonic cleaning in 3% NaOH solution for 2 hours, finally washing with distilled water and drying for later use;

[0028] (2)Al@(TiB 2 +Ti 4 o 7 ) Preparation of layered compos...

Embodiment 2

[0032] A kind of core-shell structure Al@(TiB 2 +Ti 4 o 7 )-PbO 2 +CeO 2 Composite anode plate, including Al-based metal plate matrix, TiB 2 +Ti 4 o 7 Ceramic interlayer, PbO 2 +CeO 2 Composite active catalytic layer, Al base metal plate is pure Al plate, thickness is 4mm, TiB 2 +Ti 4 o 7 The dusting thickness of the mixed powder is 2mm, and the total thickness of the composite anode plate is 6-8mm. The specific preparation process includes the following steps:

[0033] (1) Pretreatment of Al-based metal plate: Cut an aluminum plate with a thickness of 4mm into a small sample of 60mm×30mm with a wire cutting machine, and use a steel wire to polish the small sample to remove surface oxide film and impurities, and place the small sample in quality Ultrasonic cleaning in 3% NaOH solution for 2 hours, finally washing with distilled water and drying for later use;

[0034] (2)Al@(TiB 2 +Ti 4 o 7 ) Preparation of layered composite board: use a ball mill to grind TiB ...

Embodiment 3

[0038] A kind of core-shell structure Al@(TiB 2 +Ti 4 o 7 )-PbO 2 +CeO 2 Composite anode plate, including Al-based metal plate matrix, TiB 2 +Ti 4 o 7 Ceramic interlayer, PbO 2 +CeO 2Composite active catalytic layer, Al base metal plate is pure Al plate, thickness is 5mm, TiB 2 +Ti 4 o 7 The dusting thickness of the mixed powder is 2mm, and the total thickness of the composite anode plate is 6-8mm. The specific preparation process includes the following steps:

[0039] (1) Pretreatment of Al-based metal plate: Cut an aluminum plate with a thickness of 5 mm into a small sample of 60 mm × 30 mm with a shearing machine, and use a 16 mm benchtop drilling machine to polish the small sample to remove surface oxide film and impurities. Place in a 3% NaOH solution by ultrasonic cleaning for 2 hours, and finally wash with distilled water and dry for later use;

[0040] (2)Al@(TiB 2 +Ti 4 o 7 ) Preparation of layered composite board: use a ball mill to grind TiB 2 and Ti...

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Abstract

The invention discloses an Al (at) (TiB2 + Ti4O7)-PbO2 + CeO2 composite anode plate and a preparation method thereof. The composite anode plate comprises an Al-based metal plate matrix, a TiB2 + Ti4O7 ceramic middle transition layer and a PbO2 + CeO2 composite active catalytic layer, wherein the Al-based metal plate matrix in the composite anode plate has the advantages of being light in weight, good in electrical conductivity and the like, the TiB2 + Ti4O7 ceramic middle transition layer is good in wettability, high in corrosion resistance and good in catalytic activity, and the PbO2 + CeO2 composite active catalytic layer has the advantages of high corrosion resistance, good catalytic activity and the like. The Al-based TiB2 + Ti4O7 composite ceramic matrix is prepared by adopting a hot-pressing diffusion welding process, and then the PbO2 + CeO2 composite active catalytic layer is formed in an electro-deposition manner on the surface of the Al-based TiB2 + Ti4O7 composite ceramic matrix by adopting an electro-deposition method; and the composite anode plate has the advantages of being good in electrical conductivity, high in catalytic activity, high in corrosion resistance, low in cost, long in service life, wide in adaptability and the like.

Description

technical field [0001] The present invention relates to a kind of Al@(TiB 2 +Ti 4 o 7 )-PbO 2 +CeO 2 The composite anode plate and its preparation method belong to the technical fields of hydrometallurgy and electrochemical metallurgy. Background technique [0002] The anode materials commonly used in hydrometallurgy and electrochemical industries mainly include Pb alloy electrodes, Ti-based metal oxide coated electrodes and graphite electrodes. However, lead and lead-based alloy electrodes have high mass, high internal resistance, low strength, easy corrosion and dissolution of the substrate, and affect the precipitation of cathode products. Most noble metal oxide-coated titanium electrodes are not suitable for oxygen evolution reaction in sulfuric acid system, and they are expensive. Therefore, Al-based electrodes with good electrical conductivity and the advantages of not poisoning the electrolyte and contaminating the cathode precipitation products even if they are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C7/02C25D7/00C25D15/00B05D7/14
CPCC25C7/02C25D15/00C25D7/00B05D7/14
Inventor 周生刚田美玲曹勇徐阳
Owner KUNMING UNIV OF SCI & TECH