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A kind of graphene/polyaniline nanorod array composite material and its preparation method and application

A nanorod array and composite material technology, applied in the field of graphene/polyaniline nanorod array composite materials and their preparation, can solve the problem of limiting the electrocatalytic activity and conductivity of materials, limiting electrochemical electron transport and mass transfer, and lack of orientation. It can achieve the effect of high electrocatalytic activity and conductivity, high photoelectric conversion efficiency and low cost.

Active Publication Date: 2017-11-03
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the research literature found that in the graphene / polyaniline composite materials that have been successfully prepared so far, the polyaniline is mostly disordered on the surface of the carbon material. This disordered structure greatly reduces the specific surface area of ​​polyaniline and makes it lack Oriented electron transport paths limit the electron transport and mass transfer in the electrochemical process, and further limit the electrocatalytic activity and conductivity of the material

Method used

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  • A kind of graphene/polyaniline nanorod array composite material and its preparation method and application
  • A kind of graphene/polyaniline nanorod array composite material and its preparation method and application
  • A kind of graphene/polyaniline nanorod array composite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 10 mg of graphite oxide prepared by the traditional Hummers method to 15 ml of 1mol / L perchloric acid solution, crush the cells and ultrasonically disperse for 20 minutes; pipette 150 μL of aniline monomer solution into the above dispersion, and stir for 30 minutes to obtain a uniform mixture the mixed solution; transfer the mixed solution to a low-temperature reactor, and continue to stir for 30 minutes at -5°C; take 230 mg of ammonium persulfate and add it to 6 ml of 1mol / L perchloric acid solution, and after it is completely dissolved, add it dropwise to the above mixed solution , continue to stir at -5°C, and react for 20 hours; the obtained product is suction filtered, washed with ethanol and secondary water for 2 to 3 times respectively, to obtain a graphite oxide / polyaniline array composite; transfer the above composite to the reaction kettle Add 15ml of 0.1mol / L sodium borohydride aqueous solution, react at 60°C for 3.5h, filter the obtained product with suct...

Embodiment 2

[0040] Add 12 mg of graphite oxide prepared by the traditional Hummers method to 20 ml of 1mol / L perchloric acid solution, crush the cells and ultrasonically disperse for 30 minutes; pipette 150 μL of aniline monomer solution into the above dispersion, and stir for 30 minutes to obtain a uniform mixture the mixed solution; transfer the mixed solution to a low-temperature reactor, and continue to stir for 30 minutes at -10°C; take 200 mg of ammonium persulfate and add it to 5 ml of 1mol / L perchloric acid solution, and after it is completely dissolved, add it dropwise to the above mixed solution , continue to stir at -10°C, and react for 24 hours; the obtained product is suction filtered, washed with ethanol and secondary water for 2 to 3 times respectively, to obtain a graphite oxide / polyaniline array composite; transfer the above composite to the reaction kettle Add 20ml of 0.1mol / L sodium borohydride aqueous solution, react at 80°C for 3h, filter the obtained product with suct...

Embodiment 3

[0044] Add 12 mg of graphite oxide prepared by the traditional Hummers method to 15 ml of 1mol / L perchloric acid solution, crush the cells and ultrasonically disperse for 30 minutes; pipette 120 μL of aniline monomer solution into the above dispersion, and stir for 30 minutes to obtain a uniform mixture mixed solution; transfer the mixed solution to a low-temperature reactor, and continue to stir for 30 minutes at -10°C; take 180 mg of ammonium persulfate and add it to 5 ml of 1mol / L perchloric acid solution, and after it is completely dissolved, add it dropwise to the above mixed solution , continue to stir at -10°C, and react for 24 hours; the obtained product is suction-filtered, and washed with ethanol and secondary water for 2-3 times respectively to obtain a graphite oxide / polyaniline array composite.

[0045] The complex reduction steps are the same as in Example 2, and the counter electrode preparation steps are the same as in Example 1.

[0046] This counter electrode...

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Abstract

The invention discloses a preparation method of a graphene / polyaniline nanorod array composite material. The graphite oxide is dispersed in an acid solution and subjected to cell crushing and ultrasonic treatment to obtain a graphene oxide dispersion; then the aniline monomer solution is added to the In the graphite oxide dispersion, stir evenly at -5 to -10°C; then add the acid solution of ammonium persulfate, continue to stir and react at -5 to -10°C for 20 to 24 hours, and filter to obtain graphite oxide / polyaniline Nanorod array composite; reduction to obtain graphene / polyaniline nanorod array composite. The graphene / polyaniline nanorod array composite material can be used to prepare a counter electrode of a dye-sensitized solar cell. The invention realizes the orderly growth of polyaniline on the surface of graphite oxide. Based on the good electrocatalytic activity of polyaniline and the excellent electrical conductivity of graphene, the graphene / polyaniline nanorod array composite has high electrocatalytic activity and electrical conductivity at the same time. Sex, and the preparation process is simple, low cost.

Description

technical field [0001] The invention relates to the technical field of dye-sensitized solar cells, in particular to a graphene / polyaniline nanorod array composite material and its preparation method and application. Background technique [0002] Dye-sensitized solar cells (DSSCs) have attracted widespread attention from researchers due to their high conversion efficiency, low cost, and simple fabrication process, and are one of the best choices to replace traditional silicon-based solar cells. DSSCs are mainly composed of photoanode, I 3 - / I - The redox electrolyte and the counter electrode consist of three parts. The main function of the counter electrode is to collect electrons in the external circuit and catalyze the I in the electrolyte. 3 - / I - The regeneration of the redox pair ensures the stable energy output of the battery. An ideal counter electrode material should have good electrocatalytic activity and electrical conductivity at the same time, so the nobl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C08K3/04H01G9/042H01G9/20H01M14/00H01L51/44
CPCH01M14/00H01G9/042H01G9/20C08G73/0266C08K3/04H10K30/80Y02E10/542Y02E10/549
Inventor 王宗花卢冰夏建飞张菲菲赵凯
Owner QINGDAO UNIV
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