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Method of preparing electroactive molecule grafted graphene doped conductive polymer electrode materials

A technology of conductive polymers and electroactive molecules, applied in the fields of hybrid capacitor electrodes and hybrid/electric double layer capacitor manufacturing, etc., can solve the problems of improvement, graphene agglomeration, unfavorable energy density, etc., and achieves wide application prospects, simple equipment, The effect of good cycle stability

Inactive Publication Date: 2015-09-23
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the improvement of the cycle stability of the composite electrode material depends on the amount of graphene, and the addition of too much graphene will cause the agglomeration of graphene, which is not conducive to the improvement of its energy density.

Method used

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  • Method of preparing electroactive molecule grafted graphene doped conductive polymer electrode materials

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Embodiment 1

[0019] Example 1 A preparation method of electroactive molecule grafted graphene-doped conductive polymer electrode material, the steps are as follows:

[0020] (1) 1mg 1-aminoanthraquinone grafted graphene (preparation method see: Wu Q, Sun YQ, Bai H, Shi GQ. High-performance supercapacitor electrodes based on graphene hydrogels modified with 2-aminoanthraquinone moieties. Phys. Chem . Chem. Phys., 2011, 13: 11193-11198. The preparation method of 1-aminoanthraquinone grafted graphene is disclosed here, and the implementation of 2-6 method is not disclosed, but the basic preparation principle is the same as this disclosed method, only The difference between reaction time and temperature) was dissolved in 100mL water, stirred and dispersed by ultrasonic waves to form a solution of anthraquinone electroactive molecules grafted graphene (electroactive graphene) with a concentration of 0.01g / L, and set aside.

[0021] (2) Add 99 mg (1.0645 mmol) of aniline (purchased from Sinophar...

Embodiment 2

[0024] Embodiment 2. A preparation method of an electroactive molecule grafted graphene-doped conductive polymer electrode material, which differs from Example 1 in that 1 mg of 1-aminoanthraquinone grafted graphene becomes 5 mg of 1,4-diaminoanthraquinone Grafted graphene, 99mg (1.0645mmol) aniline changed to 0.35g (5.2239mmol) pyrrole, 0.2429g (1.0645mmol) ammonium persulfate changed to 1.6946g (10.4477mmol), -10℃ for 24h and changed to stirring condition at 0 ℃ reaction 18h.

Embodiment 3

[0025] Embodiment 3. A preparation method of electroactive molecule grafted graphene-doped conductive polymer electrode material, which differs from Example 1 in that 1mg 1-aminoanthraquinone grafted graphene becomes 10mg 2,6-diaminoanthraquinone Grafted graphene, 99mg (1.0645mmol) aniline to 0.5g (4.6296mmol) m-phenylenediamine, 0.2429g (1.0645mmol) ammonium persulfate to 5.0055g (18.5184mmol) potassium persulfate, react at -10℃ for 24h Change to stirring conditions and react at 10°C for 18h.

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Abstract

Provided is a method of preparing electroactive molecule grafted graphene doped conductive polymer electrode materials, comprising: adding a conductive polymer monomer into an electroactive graphene aqueous solution, uniformly mixing and then adding an oxidizing agent, and reacting for 6-24 hours under the stirring condition of -10 DEG C-30 DEG C to obtain electroactive graphene doped conductive polymer electrode materials. The method utilizes the oxygen-containing functional group on the surface of electroactive graphene and electroactive molecules grafted on the surface to perform in-situ doping on a conductive polymer. The anthraquinones electroactive molecules grafted on the graphene surface endow grapheme with good redox activity and dispersity, widen a grapheme potential window, and ensure high conductivity and stability of the conductive polymer after being doped to the conductive polymer. The electroactive molecule grafted graphene doped conductive polymer electrode materials have high energy density and circulating stability as super capacitor electrode materials.

Description

technical field [0001] The invention relates to a preparation method of an electroactive molecule grafted graphene-doped conductive polymer electrode material, belonging to the field of supercapacitor electrode materials. Background technique [0002] As a new type of energy storage device with green environmental protection and excellent performance, supercapacitor has the advantages of high power density, short charging time, long service life and no pollution to the environment. The field has wide application. However, its energy density (generally <10Wh / kg) is still low, which limits its application in the field of mass storage. Electrode materials are an important part of supercapacitors and a key factor affecting the performance and production cost of supercapacitors. The electrode materials currently used to prepare supercapacitors are mainly divided into three categories: carbon, metal oxides, and conductive polymers. [0003] High surface area carbon electrode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/48H01G11/34
CPCY02E60/13H01G11/86H01G11/34H01G11/48
Inventor 韩永芹申明霞曾少华郭义袁宗阳段鹏鹏
Owner HOHAI UNIV
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