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Electrode and preparation method thereof

An electrode and conductive carbon technology, applied in the field of electrodes, can solve the problems of high resistance of conductive polymers, poor conductivity of polymers, and cannot be used as high-current electrolysis electrodes, etc., and achieve the effects of low price, improved conductivity, and protection of metal skeletons

Inactive Publication Date: 2016-01-27
XIAMEN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conductive polymers have high resistance and cannot be used as high-current electrolysis electrodes. The problem of poor electrical conductivity of polymers can be solved by pre-embedding a three-dimensional network metal skeleton

Method used

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  • Electrode and preparation method thereof
  • Electrode and preparation method thereof
  • Electrode and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Example 1: Making a three-dimensional network metal skeleton

[0049] Take the metal mesh plate, the material is stainless steel, the plate thickness is 0.1mm, and the cut metal mesh plate is 15cm×24cm, and weld it into a 2.5cm×1.5cm×15cm cuboid (the cuboid has no bottom and top), such as figure 2 Shown. From figure 2 It can be seen that the three-dimensional network metal framework has a rectangular parallelepiped shape as a whole, including four faces, and each face is a three-layer metal mesh plate.

Embodiment 2

[0050] Example 2: Making a three-dimensional network metal skeleton containing conductive rods

[0051] Take the metal mesh plate and the conductive rod, both made of titanium, the length of the conductive rod is 12cm, the diameter is 10mm, and the cut metal mesh is 10cm×10cm. Weld one side on the conductive rod and rotate the other side along the conductive rod to form a cylindrical shape. , The conductive rod is located in the center of the cylinder, the other side is welded to the surface of the cylinder, and the welding is carried out under argon protection, such as image 3 Shown. From image 3 It can be seen that the metal mesh plate is wound on the conductive rod, and the two ends of the conductive rod extend out of the three-dimensional network metal skeleton wound by the metal mesh plate.

Embodiment 3

[0052] Example 3: Fabrication of electrodes

[0053] Take a conductive rod with a length of 17 cm and a diameter of 12 mm, and insert it into the three-dimensional network metal framework in Example 1. According to the ratio of polyaniline: polyolefin: acetylene black mass ratio = 50:20:30, weigh the raw materials and mix them evenly, heat them to a molten state (acetylene black is in a suspended state), and then inject them until the conductive rod is placed In the mesh of the three-dimensional network metal skeleton, the conductive rod is located on the central axis of the three-dimensional network metal skeleton, and the electrode is obtained by cooling.

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Abstract

The invention relates to an electrode used in the electrolytic industry and a preparation method thereof. The electrode comprises a conductive rod and a substrate, wherein the substrate is composed of a three-dimensional network metal skeleton and a conductive material. The three-dimensional network metal skeleton is made of metallic mesh plates in a welded mode, the conductive rod is embedded in the substrate, and electro-catalytic active layers cover the surface of the substrate. According to the electrode, the electric conductivity is high, the service life is long, the reaction selectivity of the electrode is good, the electrode is not prone to passivity, the production cost is low and the application value is good.

Description

Technical field [0001] The invention relates to an electrode, especially an electrode used in the electrolysis industry and a preparation method of the electrode. Background technique [0002] The performance of the electrode directly affects the production efficiency, energy consumption, product cost and quality of the electrolysis industry. Therefore, in the development process of the electrolysis industry, the development of new electrodes with excellent performance has always been valued by researchers and engineers from all over the world. [0003] Initially, graphite electrodes were used in the electrolysis industry. The electrolysis of brine requires the electrodes to have good electrocatalytic performance for the precipitation of chlorine, good durability, and the ability to inhibit the precipitation of oxygen. When the salt water concentration is high, the graphite electrode can fully meet the above requirements, but it also has the following shortcomings: high resistance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/02
Inventor 朱君秋吴允苗谢建达钟海长左娟祝雪双牒韵
Owner XIAMEN UNIV OF TECH
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