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High-conductivity carbon fiber electrode material and preparation method

A carbon fiber electrode, highly conductive technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of non-conductivity and easy dissolution, and achieve the effects of low cost, improved adhesion and improved stability

Active Publication Date: 2015-06-10
KUNMING UNIV OF SCI & TECH TECH IND SALES MANAGEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a new type of anode material - carbon fiber, and provide a new type of anode material for the existing problems of easy dissolution of lead alloy electrodes, large internal resistance of titanium-based coating electrodes, and non-conductive materials such as plastics and ceramics. A preparation method of a carbon fiber electrode material with simple preparation process, low cost, strong adaptability, good conductivity and strong catalytic activity

Method used

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  • High-conductivity carbon fiber electrode material and preparation method
  • High-conductivity carbon fiber electrode material and preparation method
  • High-conductivity carbon fiber electrode material and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0032] First cut the carbon fiber cloth to a suitable size, then use a mixture containing 70g sodium hydroxide, 30g sodium carbonate and 10 drops of cleaning agent per liter to degrease the surface of the carbon fiber cloth for 30 minutes at room temperature, and then mix the carbon fiber cloth solution together in an ultrasonic cleaner for ultrasonic treatment for 20 minutes, and then the surface of the carbon fiber cloth was cleaned with distilled water. Boil the carbon fiber cloth, wash it and dry it naturally, stack the multi-layer carbon fiber cloth after drying, and coat the conductive resin glue with a thickness of 0.5mm between each two layers of carbon fiber, and apply the conductive resin glue to the multi-layer carbon fiber. Carry out glue sealing treatment around the cloth and dry it for later use.

[0033] At a temperature of 65°C, use a mixed solution containing 150g of lead nitrate, 1g of sodium fluoride, and 25mL of concentrated nitric acid per liter with a cur...

Embodiment 2

[0035]First cut the carbon fiber cloth to a suitable size, then degrease the surface of the carbon fiber cloth for 10 minutes at room temperature with a mixed solution containing 100g sodium hydroxide, 5g sodium carbonate and 3 drops of cleaning agent per liter, and then mix the carbon fiber cloth solution together in an ultrasonic cleaner for ultrasonic treatment for 60 minutes, and then the surface of the carbon fiber cloth was cleaned with distilled water, and then the cleaned carbon fiber cloth was immersed in concentrated nitric acid with a mass fraction of 65% at room temperature for 50 minutes for surface etching treatment, and then the surface was etched with distilled water. Boil the carbon fiber cloth, wash it and dry it naturally, stack the multi-layer carbon fiber cloth after drying, and coat the conductive resin glue with a thickness of 0.1mm between each two layers of carbon fiber, and apply the conductive resin glue to the multi-layer carbon fiber. Carry out glue...

Embodiment 3

[0038] First cut the carbon fiber cloth to a suitable size, then use a mixture containing 50g sodium hydroxide, 50g sodium carbonate and 20 drops of cleaning agent per liter to degrease the surface of the carbon fiber cloth for 60 minutes at room temperature, and then mix the carbon fiber cloth liquid together in an ultrasonic cleaner for ultrasonic treatment for 30 minutes, and then the surface of the carbon fiber cloth was cleaned with distilled water. Boil the carbon fiber cloth, wash it, and dry it naturally. Stack the multi-layer carbon fiber cloth after drying, and apply a conductive resin glue with a thickness of 1mm between each two layers of carbon fiber. Seal the surrounding area and let it dry for later use.

[0039] At a temperature of 80°C, use a mixed solution containing 200g of lead nitrate, 3g of sodium fluoride, and 30mL of concentrated nitric acid per liter with a current density of 60mA·cm -2 , Electrodeposition time 2.5h, electrode plate spacing 5cm, elect...

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Abstract

The invention discloses a preparation method of a high-conductivity carbon fiber electrode material. The preparation method comprises the following steps: performing alkaline oil removal to the surface of carbon fiber cloth, carrying out ultrasonic cleaning treatment, cleanly washing with distilled water, etching and activating with concentrated sulfuric acid, boiling off with distilled water and naturally airing, binding and sealing the pretreated carbon fiber cloth with a conductive resin adhesive, performing lead electric precipitation to a plurality of layers of sealed carbon fiber, and the like. According to the method, the oil contamination and impurities on the surface of carbon fiber cloth can be removed after pretreatment, so that the surface is clean, the binding property is improved, and the stability of the electrode material is improved; the compounding of activated substance lead dioxide on the surface of the carbon fiber can be directly realized without other binders or a middle layer, the internal resistance of an electrode is reduced, the activated substances are evenly distributed on the surface of the carbon fiber, and the conductivity of the electrode material is improved. The conductive layer of the carbon fiber electrode material prepared by adopting the method is smooth, strong in adhesion force, strong in catalytic activity, low in cost, simple in technology and good in stability.

Description

technical field [0001] The invention relates to a highly conductive carbon fiber electrode material and a preparation method, belonging to the field of layered composite materials. Background technique [0002] Electrodes play a very important role in the electrolysis industry. At present, the insoluble anode materials used for the extraction of nonferrous metals mainly include lead alloy (mainly Pb-Ag alloy) electrodes and titanium-based coating electrodes. However, the former has high density, low strength, It is easy to dissolve, and lead alloy is used as anode material, which leads to the increase of lead content in electrolytic products; while the titanium-based precious metal (iridium, ruthenium, tantalum) oxide coated electrode in the latter has been successfully used in the chlor-alkali industry, but it is not It is suitable for use in the sulfuric acid electrolyte of the oxygen evolution type, and the problem that the internal resistance of titanium is too large is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C7/02
Inventor 竺培显许健周生刚曹勇韩朝辉王福范农杰张喆朱坤亮
Owner KUNMING UNIV OF SCI & TECH TECH IND SALES MANAGEMENT
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