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Preparation method of graphene polyaniline aerogel thermoelectric material

A thermoelectric material, polyaniline technology, applied in the field of materials, can solve the problems of poor material structure stability, unsatisfactory thermoelectric performance, uncontrollable component content, etc. Effect

Active Publication Date: 2016-10-26
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims to solve the technical problems of uncontrollable material component content, metal residues in the material, complicated method, poor material structure stability, uneven dispersion, and unsatisfactory thermoelectric performance in the existing method, and provides a material with controllable component content, material Preparation method of graphene polyaniline airgel thermoelectric material with no metal residue, simple method, good material structure stability, uniform dispersion, and good thermoelectric performance

Method used

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  • Preparation method of graphene polyaniline aerogel thermoelectric material
  • Preparation method of graphene polyaniline aerogel thermoelectric material
  • Preparation method of graphene polyaniline aerogel thermoelectric material

Examples

Experimental program
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Effect test

Embodiment 1

[0032] (1) Weigh 10 g of aniline monomer, dissolve in 200 ml of 2M HCl solution, and stir with a magnetic force at 200 r / min. Weigh ammonium persulfate (APS) according to the molar ratio of ammonium persulfate and aniline monomer 1:1, dissolve it in 200ml 0.1M HCl solution, and add APS dropwise into the aniline monomer solution. Ice-water bath reaction 8 hours;

[0033] (2) washing the reaction product of step (1) with ethanol and deionized water to neutrality, and drying at 100° C. to obtain intrinsic polyaniline (EB);

[0034] (3) Disperse 10mg of graphene oxide in 10ml of deionized water, ultrasonically disperse for 1h, and prepare a graphene dispersion of 1mg / ml; weigh 90mg of the synthesized polyaniline powder and disperse it in the above-mentioned graphene dispersion, 400r / ml Min magnetic stirring for 1 h, ultrasound for 30 min to obtain a uniform graphene-polyaniline dispersion solution. Graphene accounts for 10% by mass of the total mixture.

[0035] (4) Add 100 μL ...

Embodiment 2

[0040]The polyaniline preparation part of this example is the same as steps (1) and (2) in Example 1 except for the following parameters. In step (1), the stirring speed is 600r / min, and the reaction time is 3h. The molar concentration of HCl solution is 1M / L; the molar ratio of oxidant ammonium persulfate to aniline monomer is 3:1.

[0041] (3) Disperse 20mg of graphene oxide in 10ml of deionized water, ultrasonically disperse for 1h, and prepare a 2mg / ml graphene dispersion; weigh 80mg of the synthesized polyaniline powder and disperse it in the above-mentioned graphene dispersion, 400r / ml Min magnetic stirring for 1 h, ultrasound for 30 min to obtain a uniform graphene-polyaniline dispersion solution. Graphene accounts for 20% by mass of the total mixture.

[0042] (4) Add 400 μL of ammonia solution to the solution obtained in step (1), continue stirring for 1 h, and sonicate for 30 min. After sealing the solution, put it into an oven, heat treatment at 80° C., and react ...

Embodiment 3

[0047] The polyaniline preparation part of this example is the same as steps (1) and (2) in Example 1 except for the following parameters. In step (1), the stirring speed is 800r / min, and the reaction time is 5h. The molar concentration of HCl solution is 2M / L; the molar ratio of oxidant ammonium persulfate to aniline monomer is 5:1.

[0048] (3) Disperse 20mg of graphene oxide in 10ml of deionized water, ultrasonically disperse for 1h, and prepare a 2mg / ml graphene dispersion; weigh 30mg of the synthesized polyaniline powder and disperse it in the above-mentioned graphene dispersion, 400r / ml Min magnetic stirring for 1 h, ultrasound for 30 min to obtain a uniform graphene-polyaniline dispersion solution. Graphene accounts for 40% of the total mixture mass.

[0049] (4) Add 400 μL of ammonia solution to the solution obtained in step (1), continue stirring for 1 h, and sonicate for 30 min. After sealing the solution, put it into an oven, heat treatment at 110° C., and react f...

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Abstract

The invention relates to a preparation method of a graphene polyaniline aerogel thermoelectric material and solves the technical problems that existing methods are uncontrollable in material component content and complex and have residual metal in the prepared material, and the prepared material is poor in stability, uneven in dispersing and non-ideal in thermoelectric performance. The preparation method includes: weighing aniline monomer, dispersing in HCl solution, adding oxidizing agent ammonium persulfate, and stirring while polymerizing under ice water bath to obtain polyaniline; evenly dispersing graphene oxide and the polyaniline into aqueous solution; adding ammonia water into the aqueous solution to performing temperature rising treatment to prepare graphene polyaniline hydrogel; performing freeze drying on the graphene polyaniline hydrogel to prepare graphene polyaniline aerogel; sufficiently grinding the graphene polyaniline aerogel, dispersing the ground graphene polyaniline aerogel and camphorsulfonic acid into m-cresol solution, and using a solution pouring method to prepare a flexible thermoelectric film. The preparation method is applicable to the preparation field of thermoelectric materials.

Description

technical field [0001] The invention relates to the field of materials, in particular to a method for preparing a graphene polyaniline airgel thermoelectric material. Background technique [0002] Thermoelectric materials are materials that can convert heat and electricity into one another without the need for moving parts. It is necessary to assemble thermoelectric materials into devices to complete this energy conversion. Thermoelectric devices are assembled from N-type and P-type thermoelectric materials, which have the advantages of simple structure, no moving parts, strong adaptability, low maintenance rate, and can The thermoelectric effect (Seebeck-Peltier effect) realizes the advantages of thermoelectric power generation or refrigeration, and has very broad application prospects. The application of thermoelectric materials in aviation RTG uses radioactive isotopes to bombard metal plates to generate temperature differences to generate electricity, which is sufficien...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08J9/28C08J3/075C08L79/02C08K3/04C08K5/42C08G73/02
CPCC08G73/0266C08J3/075C08J5/18C08J9/28C08J2205/026C08J2379/02C08K3/04C08K5/42C08L2203/16C08L79/02
Inventor 兰金叻殷全帅王峰秦成杰于运花隋刚杨小平
Owner BEIJING UNIV OF CHEM TECH
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