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Method for compounding ternary composite membrane of cellulose, graphene oxide and carbon nano tube in ionic liquid

A technology for synthesizing cellulose and carbon nanotubes, applied in the field of material science, can solve problems such as easy collapse, low strength and deformation of cellulose composite airgel, and achieve high production safety, improved structural stability, and simple process conditions Effect

Active Publication Date: 2014-09-24
HEILONGJIANG UNIV
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Problems solved by technology

[0003] The present invention aims to solve the technical problems of low strength, easy collapse and deformation of the cellulose composite airgel prepared by the existing method, and provides a ternary composite of cellulose, graphene oxide and carbon nanotubes synthesized under ionic liquid Membrane method

Method used

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  • Method for compounding ternary composite membrane of cellulose, graphene oxide and carbon nano tube in ionic liquid
  • Method for compounding ternary composite membrane of cellulose, graphene oxide and carbon nano tube in ionic liquid
  • Method for compounding ternary composite membrane of cellulose, graphene oxide and carbon nano tube in ionic liquid

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specific Embodiment approach 1

[0021] Embodiment 1: A method for synthesizing a ternary composite film of cellulose, graphene oxide and carbon nanotubes under ionic liquid according to the present embodiment is carried out in the following steps:

[0022] 1. Weigh 1 to 15 parts by weight of cellulose and add it to 100 parts by weight of ionic liquid, and stir at 60 to 100°C for 4 to 12 hours to obtain a cellulose solution;

[0023] 2. Add graphene oxide and carbon nanotubes into the solvent respectively, and disperse evenly to obtain graphene oxide dispersion and carbon nanotube dispersion;

[0024] 3. Add the graphene oxide dispersion and the carbon nanotube dispersion obtained in step 2 to the cellulose solution obtained in step 1, and stir and react at 70-100°C for 8-24 hours to obtain a mixed solution;

[0025] 4. Add the mixed solution obtained in step 3 into distilled water for repeated washing, then filter under reduced pressure to obtain a wet film, then put the wet film in a vacuum drying oven, and...

specific Embodiment approach 2

[0026] Embodiment 2: This embodiment is different from Embodiment 1 in that the cellulose described in step 1 is α-cellulose. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0027] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the ionic liquid in step 1 is 1-butyl-3-methylimidazolium chloride. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparing method of cellulose composite materials, and discloses a method for compounding a ternary composite membrane of cellulose, graphene oxide and a carbon nano tube in ionic liquid to solve the technical problem that cellulose composite aerogel prepared based on an existing method is low in strength and prone to collapsing and deforming. The method comprises the steps that the carbon nano tube and graphene oxide dispersion liquid dispersed into organic solvent are added into the ionic liquid solution of cellulose, temperature is increased, stirring is carried out, repeated washing and suction filtration forming are carried out, and after vacuum drying at the normal temperature, the cellulose / carbon nano tube / graphene oxide ternary composite membrane is obtained. The ternary composite membrane of the cellulose, the graphene oxide and the carbon nano tube can be used in a supercapacitor.

Description

technical field [0001] The invention belongs to the field of material science, in particular to a method for synthesizing a ternary composite film of cellulose, graphene oxide and carbon nanotubes under an ionic liquid. Background technique [0002] Natural plant cellulose is one of the most abundant natural organic matter on the earth, it accounts for more than 50% of the carbon content in the plant kingdom, and about 1.5×10 can be synthesized through photosynthesis every year 12 t. In recent years, with the rapid rise of oil and other energy prices and the urgent need for sustainable development, natural plant cellulose has attracted more and more attention as an environmentally friendly renewable resource. Cellulose has a fine network structure, and uses cellulose as a matrix to replace relatively expensive synthetic polymers. At the same time, the composite material has the properties of each of the materials. The prepared cellulose-based graphene / carbon nanotube compos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86
CPCY02E60/13
Inventor 孙立国窦天威王伟艳李丽曹倩娜
Owner HEILONGJIANG UNIV
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