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Preparation method of porous graphene/carbon nanotube flexible self-supporting film material

A porous graphene and carbon nanotube technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of cumbersome preparation process, difficult industrial production, long synthesis cycle, etc. The effect of high catalytic performance, high specific surface area, and good electrical conductivity

Inactive Publication Date: 2019-01-18
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the defects existing in the existing technology, solve the problem of graphene layer accumulation and aggregation, and in the process of synthesizing graphene flexible film, its preparation process is cumbersome, the synthesis cycle is long, the cost is high, and it is difficult to industrialize the production

Method used

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  • Preparation method of porous graphene/carbon nanotube flexible self-supporting film material
  • Preparation method of porous graphene/carbon nanotube flexible self-supporting film material
  • Preparation method of porous graphene/carbon nanotube flexible self-supporting film material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A preparation method of porous graphene / carbon nanotube flexible self-supporting film material loaded with Pt nanoparticles, including the following steps:

[0048] (1) Add 7mL GO dispersion (10mg mL -1 ) Dissolve in 28mL deionized water, ultrasonically disperse to a uniform solution, and set aside;

[0049] Dissolve 1.4 mL of PS solution (2.5% (W / V)) in 2.1 mL of deionized water, mix and sonicate to a uniform solution to obtain a GO-PS mixture;

[0050] (2) Ultrasound 3.34mL of SWCNT dispersion (0.15wt%), add it to the above-mentioned GO-PS mixture, mix and stir for 15 minutes, to obtain GO-PS-SWCNT mixture;

[0051] (3) Vacuum filter the GO-PS-SWCNT mixture to form a film, heat the membrane composite material to the calcination temperature in Ar protective gas for high-temperature calcination, the calcination temperature is 500 ℃, the heating rate is 10 ℃ min -1 , Calcining time is 1h, calcining to obtain e-RGO-SWCNT flexible film;

[0052] (4) The electrochemical deposition me...

Embodiment 2

[0057] A preparation method of porous graphene / carbon nanotube flexible self-supporting film material loaded with Pt nanoparticles, including the following steps:

[0058] (1) Add 7mL GO dispersion (5mg mL -1 ) Dissolve in 28mL of deionized water and ultrasonically disperse to a homogeneous solution for use; Dissolve 1.4mL of PS solution (1%(W / V)) into 2.1mL of deionized water, mix and sonicate to a uniform solution to obtain a GO-PS mixture ;

[0059] (2) Ultrasound 3.34mL of SWCNT dispersion (0.1wt%), add it to the above-mentioned GO-PS mixture, mix and stir for 15 minutes, to obtain GO-PS-SWCNT mixture;

[0060] (3) Vacuum filter the GO-PS-SWCNT mixture to form a film, and heat the membrane composite material to the calcination temperature in Ar protective gas for high-temperature calcination. The calcination temperature is 300℃, and the heating rate is 10℃ min. -1 , Calcining time is 5h, calcining to obtain e-RGO-SWCNT flexible film;

[0061] (4) Pt (0.005 mg) was deposited on the...

Embodiment 3

[0063] A method for preparing porous graphene / carbon nanotube flexible self-supporting membrane material loaded with Pt nanoparticles, including the following steps:

[0064] (1) Add 7mL GO dispersion (8mg mL -1 ) Dissolve in 28mL of deionized water and ultrasonically disperse to a homogeneous solution for use; Dissolve 1.4mL of PS solution (3% (W / V)) into 2.1mL of deionized water, mix and sonicate to a uniform solution to obtain GO-PS mixture ;

[0065] (2) Ultrasound 3.34mL of SWCNT dispersion (0.3wt%), add it to the above-mentioned GO-PS mixture, mix and stir for 15 minutes, to obtain GO-PS-SWCNT mixture;

[0066] (3) Vacuum filter the GO-PS-SWCNT mixture to form a film, heat the membrane composite material to the calcination temperature in Ar protective gas for high-temperature calcination, the calcination temperature is 400 ℃, the heating rate is 10 ℃ min -1 , Calcining time is 3h, calcined to obtain e-RGO-SWCNT flexible film;

[0067] (4) Pt (0.015mg) was deposited on the surfac...

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Abstract

The invention relates to a preparation method of a porous graphene / carbon nanotube flexible self-supporting film material, comprising the following steps: mixing graphene oxide (GO) dispersion with polystyrene (PS) solution by ultrasonic wave to obtain the GO-PS mixture; Single-walled carbon nanotubes (SWCNT) dispersion was added to GO-PS mixture to obtain GO-PS-SWCNT mixture; The GO-PS-SWCNT mixture is vacuum-filtered into a film and calcined to obtain a porous graphene / carbon nanotube flexible self-supporting film material e-RGO-SWCNT.. The flexible membrane material prepared by the invention has high specific surface area, 3D porous interconnecting frame and good electric conductivity, is a good catalyst carrier, and can support Pt catalyst without additional self-fluid.

Description

Technical field [0001] The invention relates to a method for preparing a porous graphene / carbon nanotube flexible self-supporting membrane material, and belongs to the technical field of battery catalytic materials. Background technique [0002] Flexible electronic products, such as mobile phones, electronic paper, and wearable devices, have attracted widespread attention from researchers due to their ultra-light, portable and foldable performance. Among them, low-temperature fuel cells are considered as potential energy sources due to their low cost, high power density, and quick start. In recent years, foldable and flexible energy devices with high mechanical strength and excellent electrochemical performance have emerged and have developed rapidly, and are widely used in supercapacitors, rechargeable batteries and solar cells. So far, there are few reports on the synthesis of flexible electrode carrier materials supporting catalysts for fuel cells. [0003] Flexible electrodes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/92H01M8/1011B82Y30/00
CPCB82Y30/00H01M4/8803H01M4/926H01M8/1011Y02E60/50
Inventor 侯士峰张强
Owner SHANDONG UNIV
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