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Titanium/graphene/oxide combined electrode

A composite electrode and graphene technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., to achieve the effect of reducing energy consumption, improving surface corrosion resistance, and uniform and fine grains

Active Publication Date: 2014-01-22
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a titanium / graphene / oxide composite electrode for the problems and deficiencies of the above-mentioned series of traditional coated titanium electrode materials, which is a kind of graphene with excellent electrical conductivity added to the titanium substrate, and Graphene, as a transition layer, increases the film-base bonding strength of Mn, Pb, and La oxide coatings on the surface, and utilizes the stable lattice structure and extremely high carrier mobility of graphene to improve the overall performance of the electrode and at the same time exert The advantages of each layer make the electrode have the advantages of high strength, good conductivity, strong corrosion resistance, and long service life.

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Embodiment approach 1

[0020] Implementation mode one: if figure 1 As shown, the structure of the composite electrode in this embodiment is that the substrate is coated with graphene 1 and oxide coating 3 in sequence, the oxide coating is Pb oxide, and the substrate is a titanium alloy plate (titanium substrate 1). The graphene coated on the substrate has three layers, the thickness of each layer is 0.4mm, and the conductivity of graphene reaches 10 6 S / m, ultra-light weight (area density 0.77mg / m 2 ). The thickness of the oxide coating is 150 μm. The plate thickness of the titanium alloy was 1 mm. The titanium alloy is titanium alloy grade TA4.

[0021] The preparation method of the composite electrode in this embodiment: select an industrial grade titanium plate and cut it into a rectangle of 80 × 60 × 1mm, and sequentially treat with corrosive solution, purification solution, cleaning solution, etc. to remove the oxide film layer on the surface; suspend the prepared graphene Brush evenly on ...

Embodiment approach 2

[0024] Embodiment 2: The structure of the composite electrode in this embodiment is that the substrate is coated with graphene and oxide coating in sequence, the oxide coating is Pb oxide, and the substrate is a plate of titanium or titanium alloy. The graphene coated on the substrate has two layers, the thickness of each layer is 1.0mm, and the conductivity of graphene reaches 10 6 S / m, ultra-light weight (area density 0.77mg / m 2 ). The thickness of the oxide coating is 300 μm. The plate thickness of the titanium alloy was 1 mm. The titanium alloy is titanium alloy grade TA4.

[0025] The preparation method of this embodiment: select an industrial-grade titanium plate and cut it into a rectangle of 80×60×1mm, and sequentially treat with corrosion solution, purification solution, cleaning solution, etc. to remove the oxide film layer on the surface; put the pretreated titanium substrate into The main part is the chemical vapor deposition device of the resistance furnace, a...

Embodiment approach 3

[0028] Embodiment 3: The structure of the composite electrode of this embodiment is that the substrate is coated with graphene and an oxide coating in sequence, the oxide coating is an oxide of Mn, Pb or La, and the substrate is a plate or titanium alloy. Stencil. The graphene coated on the substrate has four layers, the thickness of each layer is 0.8mm, and the conductivity of graphene reaches 10 6 S / m, ultra-light weight (area density 0.77mg / m2 ). The thickness of the oxide coating is 700 μm. The plate thickness of the titanium alloy was 1 mm. The titanium alloy is titanium alloy grade TA4.

[0029] The preparation method of this embodiment: select an industrial-grade titanium plate and cut it into a rectangle of 80×60×1 mm, and sequentially treat with corrosive solution, purification solution, cleaning solution, etc. to remove the oxide film layer on the surface; at the same time, the organic macromolecule (C 42 h 18 etc.) ionization, purified by mass spectrometer and...

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Abstract

The invention relates to a titanium / graphene / oxide combined electrode, which belongs to the technical field of electroplating. The combined electrode is such structured that graphene and an oxide coating are successively coated on a matrix, wherein the oxide coating is an oxide of Mn, Pb or La, and the matrix is a titanium or titanium alloy plate or screen plate. A plurality of layers of graphene are coated on the matrix, each layer being 0.4 to 1.0 mm thick. The thickness of the oxide coating is 150 mu m to 700 mu m. The titanium or titanium alloy plate is 0.5 to 10 mm thick, and the mesh diameter of the screen plate is 0.1 to 5 mm. According to the invention, overall performance of the electrode is improved by using a stable lattice structure and high carrier mobility of graphene, advantages of each layer of graphene are performed, so the electrode has the advantages of high strength, good conductivity, high corrosion resistance, a long service life and the like.

Description

technical field [0001] The invention relates to a titanium / graphene / oxide composite electrode, belonging to the technical field of electroplating. Background technique [0002] In the hydrometallurgical industry and electrochemical industry (chlor-alkali industry, sewage treatment and electroplating, etc.), electrode materials are the core of the entire electrochemical reaction system. Titanium electrodes are widely used in non-ferrous metal extraction and electrochemical industries due to their excellent corrosion resistance and dimensional stability. The currently used coated titanium electrodes are mainly coated with Mn, Pb, rare and precious metal oxides around the surface of the titanium substrate. This traditional coated titanium electrode has defects such as large internal resistance, low current efficiency, and high price of precious metal coating on the surface, which greatly limits its further promotion and application. Therefore, there is an urgent need for an el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C7/02
Inventor 竺培显张瑾周生刚韩朝辉姬颖杰王福
Owner KUNMING UNIV OF SCI & TECH
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