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Titanium sub-oxide multi-dimensional coated titanium electrode and preparation method thereof

A titanium dioxide, coated electrode technology, applied in the field of electrochemistry, can solve problems such as chemical stability and oxygen evolution overpotential difference

Active Publication Date: 2019-09-24
长春光华环保有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The electrode materials obtained from the two patents disclosed above have the characteristics of good electrical conductivity, but their chemical stability and oxygen evolution overpotential are poor

Method used

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  • Titanium sub-oxide multi-dimensional coated titanium electrode and preparation method thereof
  • Titanium sub-oxide multi-dimensional coated titanium electrode and preparation method thereof
  • Titanium sub-oxide multi-dimensional coated titanium electrode and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a titanium suboxide multi-dimensional coated electrode, which includes a titanium substrate 2 and a metal oxide 1. The metal oxide 1 is attached to the titanium substrate 2. A gas introduction cavity 3 is provided in the titanium substrate 2. The titanium base 2 is provided with a wiring lug 4 and an air inlet channel 5, and the air inlet channel 5 is in communication with the gas introduction cavity 3. In this embodiment, the titanium substrate 2 is a high-purity titanium plate.

[0032] The preparation method of the titanium suboxide multi-dimensional coating electrode is:

[0033] S1. Put the high-purity titanium plate into 5wt% oxalic acid solution, heat to 65℃, keep for 30min, and perform etching treatment to remove oil stains and surface oxide film; then use ultrasonic cleaning to fully remove the residue on the high-purity titanium plate Attachments to make the high-purity titanium plate form a pitted surface;

[0034] S2. Mix ruthenium trichl...

Embodiment 2

[0038] This embodiment provides a titanium suboxide multi-dimensional coated electrode, which includes a titanium substrate 2 and a metal oxide 1. The metal oxide 1 is attached to the titanium substrate 2. A gas introduction cavity 3 is provided in the titanium substrate 2. The titanium base 2 is provided with a wiring lug 4 and an air inlet channel 5, and the air inlet channel 5 is in communication with the gas introduction cavity 3. In this embodiment, the titanium substrate 2 is a porous titanium plate.

[0039] The preparation method of the titanium suboxide multi-dimensional coating electrode is:

[0040] S1. Put the porous titanium plate into a 2wt% dilute hydrochloric acid solution, heat it to 70°C, keep it for 60 minutes, and perform an etching treatment to remove oil stains and surface oxide film; then ultrasonic cleaning is used to fully remove the residual on the porous titanium plate Attachment, make the porous titanium plate form a pitted surface;

[0041] S2. Mix ruth...

Embodiment 3

[0045] This embodiment provides a titanium suboxide multi-dimensional coated electrode, which includes a titanium substrate 2 and a metal oxide 1. The metal oxide 1 is attached to the titanium substrate 2. A gas introduction cavity 3 is provided in the titanium substrate 2. The titanium base 2 is provided with a wiring lug 4 and an air inlet channel 5, and the air inlet channel 5 is in communication with the gas introduction cavity 3. In this embodiment, the titanium substrate 2 is a sponge titanium plate.

[0046] The preparation method of the titanium suboxide multi-dimensional coating electrode is:

[0047] S1. Put the titanium sponge plate into a 5wt% dilute sulfuric acid solution, heat it to 90°C, keep it for 35 minutes, and perform an etching treatment to remove oil stains and oxide film on the surface; then use ultrasonic cleaning to fully remove the residual on the titanium sponge plate Attachment, make the sponge titanium plate pitted;

[0048] S2. Mix antimony trichloride...

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Abstract

The invention belongs to the field of electrochemistry, and particularly relates to a titanium sub-oxide multi-dimensional coated titanium electrode. The electrode comprises a titanium substrate and a metal oxide, and the metal oxide is attached to the titanium substrate. The preparation method comprises the following steps: step 1, performing treatment on the titanium substrate: treating the titanium substrate to form a pitted surface and remove attachments; step 2, preparing a coating liquid: throwing a nitrate or / and a metal chloride, or / and butyl titanate into an organic solution, and performing dissolution to obtain a coating liquid A; and adding the titanium sub-oxide into the coating liquid A to obtain a coating liquid B; step 3, performing one-time brush coating: uniformly coating the surface of the titanium substrate by the coating liquid B, performing baking for 10-90 min at 80-150 DEG C, performing calcination for 30-120 min at 350-550 DEG C, and performing cooling, wherein the amount of the coating liquid B coating the titanium substrate is 10-40 mL / m<2>; and step 4, repeating the brush coating: repeating the step 3 for 10-30 times to obtain the electrode. According to the method provided by the invention, the titanium electrode obtained by the method has the advantages of good chemical stability, good electrical conductivity and high oxygen evolution overpotential.

Description

Technical field [0001] The invention belongs to the field of electrochemistry, and specifically relates to a titanium suboxide multi-dimensional coating electrode and a preparation method thereof. Background technique [0002] Titanium suboxide is considered to be the most potential electrode material in electrochemical applications due to its high conductivity and strong corrosion resistance. In addition, titanium suboxide is also considered to be a low-cost material because it is the most promising material on earth. TiO, one of the abundant raw materials 2 be made of. Although the conductivity of titanium suboxide changes with the change of the value of n, the conductivity of it and carbon rods is an order of magnitude, and in all titanium suboxide materials, Ti 4 O 7 The conductivity is the highest, compared with graphite, its conductivity is 1500s / cm. [0003] Titanium suboxide material has the advantages of high conductivity, high electrochemical stability and superior corro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/46C02F101/34
CPCC02F1/46C02F2101/345
Inventor 郭九吉张淑荣
Owner 长春光华环保有限责任公司
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