Graphene/carbon nanotube conductive film and preparation method thereof

A carbon nanotube and conductive film technology, applied in the field of graphene/carbon nanotube conductive film and its preparation, can solve the problems of large environmental impact and increased cost, and achieve the effects of low preparation temperature, low cost and short preparation cycle

Inactive Publication Date: 2019-01-25
浙江云墨绿能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In conventional methods, graphene oxide or carbon nanotubes whose surface has been strongly oxidized are often used. The above-mentioned raw materials often need to undergo a strict and harsh chemical oxidation process, which not only increases the cost, but also has a great impact on the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Weigh 0.5g Triton X-100 (Triton X-100), then dissolve it in 500mL deionized water, after fully stirring, then add 0.025g of carbon nanotubes and 0.075g of graphene, and disperse after fully stirring at 20°C Afterwards, ultrasound was performed for 4 hours with a 100-watt ultrasonic probe. Then vacuum filter the suspended liquid dispersed in water onto a porous polytetrafluoroethylene filter membrane with a diameter of 5 cm, and then fully dry it naturally at room temperature to obtain an independent self-supporting film, and then fully wash the filter membrane with ethanol After cleaning, a graphene / carbon nanotube conductive film was obtained, and its conductivity was tested to be 205 S / cm.

Embodiment 2

[0018] Weigh 0.5g Triton X-100 (Triton 100), then dissolve it in 500mL deionized water, after fully stirring, then add 0.15g of carbon nanotubes and 0.05g of graphene, after fully stirring and dispersing at room temperature , using a 100-watt ultrasonic probe to sonicate for 5 hours, and then vacuum-filter the above-mentioned suspended liquid dispersed in water onto a porous polytetrafluoroethylene filter membrane with a diameter of 5 cm, and then fully dry naturally at room temperature to obtain an independent self- Support the film, and then fully wash the filter film with ethanol to obtain a graphene / carbon nanotube conductive film, and its conductivity was tested to be 125 S / cm.

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Abstract

The invention discloses a graphene / carbon nanotube conductive film and a preparation method thereof, in particular, a self-supporting composite film obtained by dispersing an aqueous dispersion solution of graphene and carbon nanotube through the action of a surfactant and vacuum suction filtration, which provides raw materials for the design of a composite material and an electric heating device.The invention has the advantages of simple process, low cost, high efficiency, green environment protection, large product size and controllable thickness.

Description

technical field [0001] The invention relates to the field of preparation of nano functional materials, in particular to a graphene / carbon nanotube conductive film and a preparation method thereof. Background technique [0002] Since graphene and carbon nanotubes have been extensively studied, they have received much attention, especially for their excellent thermal, electrical, and mechanical properties. They have been extensively studied for energy storage, semiconductor devices, electrodes, and sensors. The conductive films constructed by their composites have aroused great interest and can be used in supercapacitors, pressure sensors, elastic temperature sensors, high-performance polymer composites and other fields, and their composites through van der Waals forces can form self-supporting films. The self-supporting film can give full play to the functions of each component and has better industrial application value. However, carbon nanotubes and graphene are often eas...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01B1/04H01B5/14H01B13/00
CPCH01B1/04H01B5/14H01B13/00
Inventor张瑛徐军明
Owner浙江云墨绿能科技有限公司