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Preparation method of anthraquinone-molecule non-covalent modified graphene/conductive polymer composite

A conductive polymer and non-covalent modification technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of small effective specific surface area of ​​composite materials, and achieve easy scale-up production, wide application prospects, The effect of increasing energy density

Inactive Publication Date: 2015-08-26
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]The research on conductive polymer / graphene composite electrode materials has already had a good foundation[Meng YN, Wang K, Zhang YJ, Wei ZX. Hierarchical porous graphene / polyaniline composite film with superior rate performance for flexible supercapacitors. Adv. Mater., 2103, 25:6985-6990.Kumar NA, Choi HJ, Shin YR, Chang DW, Dai LM, Baek JB. Polyanline-grafted reduced graphene oxide for efficient electrolytes supercapa . ACS Nano, 2012,6:1715-1723. Zhao Y, Liu J, Hu Y, Cheng HH, Hu CG, Jiang CC, et al. Highly compression-tolerant supercapacitor based on polypyrrole-mediated graphene foam electrodes. Adv. Mater .,2013,25:591-595.], but due to the π-π stacking effect between graphene and conductive polymers, the effective specific surface area of ​​the composite material is small, and the surface stacking problem of graphene sheets in the composite material is still the main factor restricting its supercapacitive characteristics

Method used

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  • Preparation method of anthraquinone-molecule non-covalent modified graphene/conductive polymer composite

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Embodiment 1

[0020] Embodiment 1 A preparation method of anthraquinone molecule non-covalently modified graphene / conductive polymer composite material, the steps are as follows:

[0021] (1) Dissolve 1.5513g (5mmol) sodium anthraquinone-1-sulfonate (purchased from Shanghai Future Industrial Co., Ltd.) in 100mL 0.01mg / mL graphene oxide solution (for the preparation method refer to Hummers WS, Offeman R E. Preparation of graphite oxide. J Am Chem Soc, 1958, 80: 1339)), stirred and dispersed by ultrasonic waves to form a solution, set aside;

[0022] (2) Add 67 μL (1 mmol) of pyrrole monomer (purchased from Aldrich) to the above dispersion, stir and disperse with ultrasonic waves to form a reaction system, set aside;

[0023] (3) Stir the above reaction system at 30°C for 48 hours to obtain the product;

[0024] (4) The obtained product was repeatedly washed with deionized water, and dried in a vacuum drying oven at 60°C for 24 hours to obtain a non-covalently modified graphene / conductive po...

Embodiment 2

[0025] Embodiment 2. A preparation method of anthraquinone molecule non-covalently modified graphene / conductive polymer composite material, which is different from Example 1 in that the concentration of graphene oxide becomes 0.4mg / mL, 1.5513g (5mmol) anthraquinone- 1-sodium sulfonate is changed to 4.6539g (15mmol) sodium anthraquinone-2-sulfonate, 67μL (1mmol) pyrrole monomer is changed to 450μL (5mmol) aniline monomer, stirring reaction at 30°C for 48h becomes 60°C reaction 36h.

Embodiment 3

[0026] Embodiment 3. A preparation method of anthraquinone molecule non-covalently modified graphene / conductive polymer composite material, which differs from Example 1 in that the concentration of graphene oxide becomes 0.2mg / mL, 1.5513g (5mmol) anthraquinone- Sodium 1-sulfonate becomes 1.6655g (4mmol) of acid blue 25, 67μL (1mmol) of pyrrole monomer becomes 220μL (2mmol) of 3,4-ethylenedioxythiophene, and the stirring reaction is carried out at 30°C for 48h to 90°C Reaction 24h.

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Abstract

The invention discloses a preparation method of an anthraquinone-molecule non-covalent modified graphene / conductive polymer composite. The method comprises the steps of dissolving an anthraquinone derivative in a graphene oxide solution, performing stirring and ultrasonic dispersion, adding a conductive polymer monomer to the solution, performing stirring, ultrasonic dispersion and uniform mixing, and performing stirring and a reaction under a heating condition to prepare the anthraquinone-molecule non-covalent modified graphene / conductive polymer composite. According to the method, an anthraquinone molecule is anchored on the surface of graphene oxide by utilizing hydrogen-bond interaction and pi-pi interaction between the anthraquinone molecule and graphene oxide, an oxygen-containing functional group on the surface of graphene oxide serves as an oxidant, the monomer is oxidized into a conductive polymer, and graphene oxide is reduced into graphene, so that the prepared composite represents high conductivity and stability and can serve as a potential electrode material of a supercapacitor.

Description

technical field [0001] The invention relates to a preparation method of anthraquinone molecule non-covalently modified graphene / conductive polymer composite material, and belongs to the field of supercapacitor electrode materials. Background technique [0002] Anthraquinone and its derivatives contain quinone groups with aromatic ring structure and good redox characteristics, which can be directly extracted from plants, have good electrochemical activity, and their good electron and proton accepting ability make them suitable for use in supercapacitor electrode materials has been extensively studied. Anthraquinone covalently or non-covalently modify carbon materials such as carbon fibers, activated carbon, carbon nanotubes, and graphene, and their energy density can be significantly improved compared with unmodified carbon materials. Compared with directly adding electroactive molecules into the electrolyte to improve the specific capacitance of carbon materials, anthraquin...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/48H01G11/36
CPCY02E60/13H01G11/86H01G11/36H01G11/48
Inventor 韩永芹申明霞陆凤铃曾少华郭义袁宗阳
Owner HOHAI UNIV
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