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Preparation method of Sb-doped SnO2 @ carbon nanotube composite electrothermal film

A carbon nanotube composite and carbon nanotube thin film technology, which is applied in the field of electric heating thin film material preparation, can solve the problems of poor long-term stability and low thermal conversion rate of carbon nanotube thin films, improve the heating rate, and overcome the poor flexibility of oxides. , the effect of reducing resistance

Active Publication Date: 2019-11-01
南京智融纳米新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Carbon nanotubes have high thermal conductivity, but carbon nanotube films still have the problems of low thermal conversion rate and poor long-term stability in the field of electric heating

Method used

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  • Preparation method of Sb-doped SnO2 @ carbon nanotube composite electrothermal film
  • Preparation method of Sb-doped SnO2 @ carbon nanotube composite electrothermal film
  • Preparation method of Sb-doped SnO2 @ carbon nanotube composite electrothermal film

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Experimental program
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Effect test

Embodiment 1

[0022] Divide the area 10×10cm 2 The carbon nanotube film was soaked in dilute hydrochloric acid for 6 hours, rinsed with deionized water and ethanol respectively, then soaked in concentrated nitric acid for 6 hours, rinsed with deionized water and ethanol again, and placed in an oven at a constant temperature of 60°C. drying to obtain a two-step acid-treated carbon nanotube film sample.

Embodiment 2

[0024] On the basis of Example 1, the two-step acid-treated film was immersed in SnCl 4 , NaOH and SbCl 3 In the mixed reaction solution, the solvent is a mixture of deionized water and ethanol, and it is hydrothermally heated in a 150°C reactor, washed and dried; finally, the dried film is placed in a tube furnace, under an inert gas N 2 Under protection, the temperature was raised to 500°C at a rate of 5°C / min for sintering for 20 minutes, and the film was taken out after cooling down to obtain the final product antimony-doped SnO 2 @Carbon nanotube composite electrothermal film material.

Embodiment 3

[0026] SnCl 4 , NaOH and SbCl 3 SbCl in the mixed reaction solution of 3 Remove, other conditions are identical with embodiment 2, obtain SnO 2 @Carbon nanotube composite membrane material.

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Abstract

It is disclosed that the advantages of two types of electric heating materials are combined to prepare a Sb-doped SnO2 @ carbon nanotube composite electric heating film. In the method, Sb-doped SnO2 is loaded on a carbon nanotube film by adopting a hydrothermal method; therefore, compared with a pure carbon nanotube film, the material has the advantages that the electric heating performance is remarkably improved, the electric resistance is reduced, the required power is lower when the temperature is increased to the same temperature, and the heating rate is higher. The composite film in the invention is a novel flexible electric heating material which is convenient to use, energy-saving and environment-friendly, and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of preparation of electric heating thin film materials, in particular to an antimony-doped SnO 2 Preparation method of @carbon nanotube new composite electrothermal film material. Background technique [0002] Electrothermal film technology is a new type of electrothermal conversion technology, which can effectively save energy costs and improve energy utilization efficiency. Among them, the metal oxide electrothermal film stands out among many materials due to its low resistivity, stable performance at high temperature, strong resistance to oxidation and chemical corrosion, simple production method, easy availability of raw materials, and low price. [0003] Carbon nanotubes have high thermal conductivity, but carbon nanotube films still have the problems of low heat conversion rate and poor long-term stability in the field of electric heating. SnO 2 Thin film is a transparent conductive film with a visi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/168C01G19/02H05B3/14H05B3/34
CPCC01B32/168C01G19/02H05B3/14H05B3/34C01P2004/03C01P2006/32C01P2006/40Y02P20/10
Inventor 唐少春王锐
Owner 南京智融纳米新材料科技有限公司
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