Method for preparing porous metal oxide-coated carbon nanotube composite material

A composite material and porous metal technology, applied in the direction of nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve the problems of pollution, versatility, low output, etc., and achieve excellent electrochemical energy storage, high output, and good versatility

Inactive Publication Date: 2012-12-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of low output of the existing preparation method of porous metal oxide-coated carbon nanotube composite material, easy to cause F pollution and poor versatility of the preparation waste liquid, and provide a method for preparing porous metal oxide-coated carbon nanotube composite materials. Carbon Nanotube Composites Methods

Method used

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  • Method for preparing porous metal oxide-coated carbon nanotube composite material
  • Method for preparing porous metal oxide-coated carbon nanotube composite material
  • Method for preparing porous metal oxide-coated carbon nanotube composite material

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specific Embodiment approach 1

[0031] Specific Embodiment 1: In this embodiment, the method for preparing porous metal oxide-coated carbon nanotube composite material is carried out according to the following steps: 1. Add 0.5-800 mg of metal salt to each milliliter of polyol, and heat the mixture under the condition of 50-180 ° C. 2. Prepare the solution according to the volume ratio of water and organic solvent 0:100-30:100, add 0.1-10 mg of carbon nanotubes to each milliliter of the solution, and then ultrasonically disperse to obtain Carbon nanotube dispersion; 3. Stir and mix the metal oxide precursor solution and the carbon nanotube dispersion at a volume ratio of 1:10 to 1:0.1 for 0.2 to 20 hours, and then centrifuge at 3000 to 4000 r / min for 1 to 20 hours. For 10 minutes, wash and centrifuge the resulting precipitate with ethanol, and then dry it by blowing at room temperature to obtain the polymer precursor of the metal oxide coated carbon nanotube composite; 4. The polymer precursor of the metal ox...

specific Embodiment approach 2

[0036] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the acetylacetonate salt in step one is scandium acetylacetonate, titanium acetylacetonate, vanadium acetylacetonate, chromium acetylacetonate, manganese acetylacetonate, iron acetylacetonate, acetylacetonate Cobalt acetonate, nickel acetylacetonate, copper acetylacetonate, zinc acetylacetonate, aluminum acetylacetonate, gallium acetylacetonate, yttrium acetylacetonate, zirconium acetylacetonate, molybdenum acetylacetonate, ruthenium acetylacetonate, cadmium acetylacetonate, indium acetylacetonate, tin acetylacetonate , hafnium acetylacetonate, tantalum acetylacetonate, iridium acetylacetonate, thallium acetylacetonate, lead acetylacetonate, lanthanum acetylacetonate, cerium acetylacetonate, praseodymium acetylacetonate, neodymium acetylacetonate, samarium acetylacetonate, europium acetylacetonate, gadolinium acetylacetonate, acetylacetonate Terbium acetylacetonate, dyspro...

specific Embodiment approach 3

[0037] Specific embodiment 3: The difference between this embodiment and specific embodiments 1 to 2 is that the polyol in step 1 is composed of one or more of ethylene glycol, glycerol or diethylene glycol.

[0038] In this embodiment, when the polyols are a mixture, various polyols can be mixed in any ratio.

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Abstract

The invention relates to a method for preparing metal oxide / carbon nanotube composite material, in particular to a method for preparing porous metal oxide-coated carbon nanotube composite material. The invention solves the problems that the yield is low, the waste liquid produced during preparation is apt to cause F pollution and the universality is poor which exist in the traditional preparation method for porous metal oxide-coated carbon nanotube composite material. The preparation method of the invention comprises the following steps: 1. preparing metal oxide precursor solution; 2. preparing carbon nanotube dispersion liquid; 3. preparing metal oxide polymer precursor-coated carbon nanotube composite material; and 4. conducting hydrolysis or pyrolysis to the metal oxide polymer precursor-coated carbon nanotube composite material to obtain the porous metal oxide-coated carbon nanotube composite material. The invention has the advantages that the preparation process is simple, the yield is high, and the prepared porous metal oxide-coated carbon nanotube composite material can be potentially applied in fields such as chemical power sources, photocatalysis, gas sensors, biosensors and the like.

Description

technical field [0001] The invention relates to a method for preparing metal oxide / carbon nanotube composite material. Background technique [0002] Metal oxides are widely used in energy, chemical industry, environment, information and other fields. For example, using its electrochemical energy storage performance, it can be used as an electrode active material in various chemical power sources; using its gas-sensing and bio-sensitivity properties, it can be used as a sensitive material for gas sensors and biosensors; using its electrocatalytic properties, as Catalysts are used in fuel cells; their photocatalytic properties are used for photolysis of water, photodegradation and dye-sensitized solar cells; their magnetic properties are used for information recording and storage. Due to the high specific surface area of ​​metal oxides with a porous structure, the porous structure can also provide channels for the free diffusion of ions in the electrolyte, so porous metal oxi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B82B3/00
Inventor 方海涛丰炳梅王慧鑫王冬牛余慧龙
Owner HARBIN INST OF TECH
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