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Heteroatom doped porous carbon membrane as well as preparation method and application thereof

A technology of heteroatom and porous carbon is applied in the field of self-supporting heteroatom doped porous carbon membrane and its preparation, which can solve the problems of difficult preparation of carbon membrane materials, and achieve the effects of easy large-scale preparation, high electrical conductivity and environmental friendliness.

Inactive Publication Date: 2018-11-06
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The purpose of the present invention is to address the huge practical application prospects of current carbon film materials and the difficulties in the preparation of carbon film materials.

Method used

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  • Heteroatom doped porous carbon membrane as well as preparation method and application thereof
  • Heteroatom doped porous carbon membrane as well as preparation method and application thereof
  • Heteroatom doped porous carbon membrane as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (1) Preparation of poly(3-cyanomethyl-1-vinylimidazole) trifluoromethanesulfonimide ionic liquid:

[0054] In a 250mL round-bottomed flask, 9.4g of vinylimidazole and 12g of bromoacetonitrile were dissolved in 100mL of ethanol solution and reacted at 40°C for 24 hours to obtain a white 3-cyanomethyl-1-vinylimidazole ionic liquid monomer. Yield: 95%. Take 10 g of the ionic liquid monomer prepared above, dissolve it in dimethylformamide, add 0.2 g of azobisisobutyronitrile, and react at 70 ° C for 48 hours to obtain white poly(3-cyanomethyl-1 -vinylimidazole) bromide ionic liquid. Weigh 10g of poly(3-cyanomethyl-1-vinylimidazole) bromide ionic liquid, dissolve it in 1000mL of deionized water, add 13g of lithium trifluoromethanesulfonyl imide, and stir at room temperature for 4 hours to obtain the target Polyionic liquid, poly(3-cyanomethyl-1-vinylimidazole) trifluoromethanesulfonimide ionic liquid.

[0055] (2) Preparation of polymer composite membrane:

[0056] Disso...

Embodiment 2

[0059] 1 g of the polyionic liquid prepared in Example 1 and 0.18 g of polyacrylic acid with a molecular weight of 250,000 KDa were dissolved, dispersed in 10 mL of dimethylformamide, poured on a glass plate, and dried at 100° C. for 8 hours. Then, immerse in 0.1% ammonia solution and leave it for 2 hours to obtain a polymer composite film. Under the protection of nitrogen, the obtained polymer film is carbonized at 1000 ° C for 4 hours to obtain a porous nitrogen-doped carbon film. image 3 shown.

Embodiment 3

[0061] (1) Preparation of poly(3-cyanomethyl-1-vinylimidazole) hexafluorophosphate ionic liquid:

[0062] In a 250mL round-bottomed flask, 9.4g of vinylimidazole and 12g of bromoacetonitrile were dissolved in 100mL of ethanol solution and reacted at 40°C for 24 hours to obtain a white 3-cyanomethyl-1-vinylimidazole ionic liquid monomer. Yield: 95%. Take 10 g of the 3-cyanomethyl-1-vinylimidazole ionic liquid monomer prepared above, dissolve it in dimethylformamide, add 0.2 g of azobisisobutyronitrile, and react at 70°C for 48 hours to obtain White polyvinylimidazolium bromide ionic liquid. Weigh 10g of poly(3-cyanomethyl-1-vinylimidazole) bromide ionic liquid, dissolve it in 1000mL of deionized water, add 10g of potassium hexafluorophosphate, and stir at room temperature for 4 hours to obtain the target polyionic liquid, Poly(3-cyanomethyl-1-vinylimidazole) hexafluorophosphate ionic liquid.

[0063] (2) Preparation of polymer composite membrane:

[0064] Dissolve 1 g of th...

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Abstract

The invention provides a heteroatom doped porous carbon membrane as well as a preparation method and an application thereof, and belongs to the field of new-energy carbon-based materials. A functionalpolyionic liquid is synthesized firstly and then is mixed with a compound containing carboxyl for dissolving, and a polymer membrane is obtained with a film casting technology; a porous polymer composite membrane is obtained through soaking with ammonium hydroxide; the polymer composite membrane is carbonized, and the heteroatom doped porous carbon membrane can be prepared. The prepared carbon membrane has controllable thickness and pore diameter and devisable shape and large-scale preparation is facilitated; the carbon membrane is easily functionalized, and can support functional materials such as metal nanometerials, carbon nano tubes, graphene and the like. The prepared heteroatom doped porous carbon membrane can be taken as a gas diffusion electrode and has broad actual application prospect in the field of energy conversion.

Description

technical field [0001] The invention belongs to the technical field of new energy materials, and specifically relates to a self-supporting heteroatom-doped porous carbon film capable of large-scale preparation and a preparation method and application thereof. Background technique [0002] Porous carbon materials are widely used as catalyst supports or components for various energy conversion devices due to their excellent properties such as cheap and easy to obtain, large specific surface area, good electrical conductivity, and excellent chemical stability. High-performance carbon materials are research hotspots in academia and industry in recent years [1-4]. At present, the research and development of functional carbon materials in the world is still in the stage of regulating the morphology and composition of powdered carbon. In the actual device processing and application process, it is often necessary to add polymer binders (such as Nafion and PVDF) to the prepared carb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/10C25B11/12C25B1/04C08J9/28C08L39/04C08L33/00
CPCC25B1/04C08J9/286B01J27/24C08J2433/00C08J2339/04C25B11/043B01J35/33B01J35/60Y02E60/36
Inventor 王鸿邵越江志萍
Owner NANKAI UNIV
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