Preparation method of three-phase composite electrode

A composite electrode and a certain amount of technology, applied in the field of electrodes, can solve the problems of vanadium battery safety hazards, battery leakage, graphite plate etching, etc., and achieve the effect of avoiding etching phenomenon, improving stability, and improving reversibility

Active Publication Date: 2017-10-13
CHENGDU 90 DEGREE IND PROD DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The electrodes of vanadium batteries in the prior art are all made of graphite materials, but the graphite plate on the positive side is etched, which is easy to cause battery leakage accidents, resulting in serious safety hazards in the use of vanadium batteries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0032] Dissolve 1g of potassium persulfate and 1.5g of phosphorus pentoxide in concentrated sulfuric acid, add 5g of graphite, react for 5h at 80°C, cool to room temperature, filter, and dry to obtain solid A. Mix A with 10mL of 90% concentrated sulfuric acid evenly, add 29.25g of potassium permanganate at 5°C, react for 3 hours, then add 2mL of hydrogen peroxide to obtain a yellow precipitate, which is filtered and dried. Weigh 2g of p-aminobenzenesulfonic acid and dissolve it in 15mL of sodium hydroxide solution with a mass fraction of 2%. For sodium nitrate, hydrochloric acid was added dropwise to the solution according to the molar ratio of p-aminobenzenesulfonic acid: hydrochloric acid 20:1, and a white precipitate was obtained, which was filtered and dried. The resulting yellow precipitate was mixed with NaBH 4 Mix evenly at a molar ratio of 1:1.5 and pour into water, add the white precipitate to the water at a mass ratio of white precipitate: yellow precipitate of 1:1....

Embodiment 3

[0037] Weigh 1g of potassium persulfate and 1.5g of phosphorus pentoxide and dissolve in concentrated sulfuric acid, add 5g of graphite, react for 4.3h at 80°C, cool to room temperature, filter, and dry to obtain solid A. Solid A was mixed evenly with 10mL of 90% concentrated sulfuric acid, and 29.25g of potassium permanganate was added at 2.7°C. After 2.5h of reaction, 2mL of hydrogen peroxide was added to obtain a yellow precipitate, which was filtered and dried. Weigh 2g of p-aminobenzenesulfonic acid and dissolve it in 15mL of sodium hydroxide solution with a mass fraction of 2%. For sodium nitrate, hydrochloric acid was added dropwise to the solution according to the molar ratio of p-aminobenzenesulfonic acid: hydrochloric acid 20:1, and a white precipitate was obtained, which was filtered and dried. The resulting yellow precipitate was mixed with NaBH 4 Mix evenly at a molar ratio of 1:1.5 and pour into water, add the white precipitate to the water at a mass ratio of wh...

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Abstract

The invention discloses a preparation method of a three-phase composite electrode, and relates to the field of an electrode. According to the preparation method, sulfonated graphene, MnO2 and poly(3,4-ethylenedioxythiophene)-polystyrolsulfon acid are used as raw materials, in the prepared three-phase composite electrode, the MnO2 is electroplated on a surface of the sulfonated graphene, and the poly(3,4-ethylenedioxythiophene)-polystyrolsulfon acid is electroplated on a surface of the MnO2. The three-phase composite electrode prepared according to the method of the three-phase composite electrode has the characteristics that the etching phenomenon of a graphite electrode is reduced, the service lifetime of a vanadium battery is prolonged, and the application safety of the vanadium battery is improved.

Description

[0001] This application is a divisional application titled "A Three-phase Electrode for a Vanadium Battery and Its Preparation Method" [0002] The filing date of the original application is: 2015-10-21 [0003] The application number of the original application is: 2015106819637. technical field [0004] The invention relates to the field of electrodes, in particular to a method for preparing a three-phase composite electrode. Background technique [0005] Vanadium redox flow battery is a new type of electrochemical energy storage device, which consists of a battery stack, positive and negative electrolyte storage tanks and other auxiliary control devices. In addition to the characteristics of general redox flow batteries, vanadium batteries use vanadium ion solutions of different valence states as the positive and negative active materials of the battery, which eliminates battery failure caused by electrolyte cross-contamination; vanadium batteries are in production and u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/88H01M8/18
CPCH01M4/8657H01M4/88H01M8/18Y02E60/50
Inventor 肖勇
Owner CHENGDU 90 DEGREE IND PROD DESIGN CO LTD
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