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Process for preparing carbon nano tube film through electrophoresis deposition

A carbon nanotube film and electrophoretic deposition technology, applied in the field of nanomaterials, can solve the problems of poor controllability of film thickness and poor film uniformity, and achieve the effects of controllable film thickness, short production cycle, and easy industrial promotion and application

Inactive Publication Date: 2005-01-26
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] At present, the main problems in the preparation of carbon nanotube films by electrophoretic deposition are poor controllability of film thickness and poor film uniformity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. The black powder of multi-walled carbon nanotubes prepared by nano-agglomeration technology has a purity greater than 80%, an inner diameter of 2-30 nanometers, an outer diameter of 5-60 nanometers, and an aggregate size of tens of microns. The carbon nanotubes are mixed with 30% hydrogen peroxide solution, ultrasonically oscillated for 10 minutes and then filtered; the carbon nanotubes are repeatedly washed three times with carbon disulfide; the carbon nanotubes are repeatedly washed three times with anhydrous methanol; and dried. The above carbon nanotubes were mixed with 75 ml of 98% concentrated sulfuric acid and 25 ml of 69% concentrated nitric acid, heated under reflux at 75° C. for 10 minutes, and the carbon nanotubes were filtered out; the carbon nanotubes were washed with deionized water and dried.

[0041] 2. Weigh 50 mg of the above-mentioned carbon nanotubes, add 100 ml of absolute ethanol and 512 mg of magnesium chloride, ultrasonically oscillate for 20 m...

Embodiment 2

[0047] 1. The black powder of multi-walled carbon nanotubes prepared by nano-agglomeration technology has a purity greater than 80%, an inner diameter of 2-30 nanometers, an outer diameter of 5-60 nanometers, and an aggregate size of tens of microns. The carbon nanotubes are mixed with 30% hydrogen peroxide solution, ultrasonically oscillated for 10 minutes and then filtered; the carbon nanotubes are repeatedly washed three times with carbon disulfide; the carbon nanotubes are repeatedly washed three times with anhydrous methanol; and dried. The above carbon nanotubes were mixed with 75 ml of 98% concentrated sulfuric acid and 25 ml of 69% concentrated nitric acid, heated under reflux at 75° C. for 10 minutes, and the carbon nanotubes were filtered out; the carbon nanotubes were washed with deionized water and dried.

[0048] 2. Weigh 50 mg of the above-mentioned carbon nanotubes, add 100 ml of absolute ethanol and 512 mg of magnesium chloride, ultrasonically oscillate for 20 m...

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Abstract

A method for electrophoretic deposition preparation of the carbon nanotube film belongs to the field of the nano materials technology. The preparing method comprises the following steps: purification treatment and face finish for the carbon nanotube, the formation of the carbon nanotube stable suspension, electrophoretic deposition for the carbon nanotube film, film drying, and second electrophoretic deposition. The invention has the advantages of simple production equipment, rapid film forming speed, controllable film thickness, and unlimited substrate shape.

Description

technical field [0001] The invention relates to a preparation method of a carbon nanotube film, in particular to an electrophoretic deposition preparation method, and belongs to the technical field of nanometer materials. Background technique [0002] Carbon nanotubes are currently an ideal one-dimensional nanomaterial prepared artificially. Due to their unique composition and structure, carbon nanotubes exhibit many unique physical properties, and are widely used in sensors, flat panel displays, supercapacitors, composite materials, etc. a wide range of applications. Among them, the prospect of the application of the macroscopic film structure composed of carbon nanotubes according to certain rules is more exciting. [0003] At present, the preparation methods of carbon nanotube films mainly include direct growth method and post-processing method. [0004] The direct growth method is to use arc discharge, laser ablation, chemical vapor deposition and other preparation met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02C25D13/00C25D15/00
Inventor 叶雄英郭琳瑞周兆英
Owner TSINGHUA UNIV
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