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Graphene composite powder material and preparation method thereof

A graphene composite and powder material technology, applied in the field of graphene materials, can solve the problems of high degree of agglomeration of graphene material powder, unfavorable application of graphene materials, poor dispersion, etc., to achieve excellent dispersion and conductivity, Effects that are easy to disperse with fewer steps

Active Publication Date: 2015-01-28
NINGBO MORSH TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the graphene material powder obtained by this preparation method has a high degree of agglomeration and poor dispersion, which is not conducive to the application of graphene materials in subsequent downstream products.

Method used

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  • Graphene composite powder material and preparation method thereof
  • Graphene composite powder material and preparation method thereof
  • Graphene composite powder material and preparation method thereof

Examples

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preparation example Construction

[0043] The present invention also provides a kind of preparation method one of graphene composite powder material, and this preparation method one comprises the following steps:

[0044] Step (11), the first polymer monomer, graphene material, and micro-nano structure material are added to water to obtain a mixed solution, wherein the mass ratio of the first polymer monomer, graphene material, and micro-nano structure material It is (0.01~1):(0.1~1):(5~1);

[0045] Step (12), adding a water-soluble initiator, reacting at a reaction temperature of 30°C to 100°C, and the reaction time is 1 hour to 10 hours, wherein the water-soluble initiator and the first polymer monomer The mass ratio is 1:10~1:100; and

[0046] Step (13), dry treatment to obtain the graphene composite powder material.

[0047] In step (11), the first polymer monomer, the graphene material, and the micro-nano structure material are mixed in advance, and the first polymer monomer can disperse the graphene mat...

Embodiment (1

[0076] Weigh 0.1g of polyvinylpyrrolidone, 1g of graphene material and 1g of conductive carbon black (super-P), and disperse them in 1L of deionized water, stir them evenly and spray dry them.

[0077] After measurement, the electrical conductivity of the obtained graphene composite powder material is ≥3500S / m, and the apparent density is 0.17g / cm 3 .

[0078] Such as figure 1 As shown, the dispersibility of the graphene composite powder material is good, and the conductive carbon black (super-P) is attached to the surface of the graphene material. The obtained graphene composite powder material is dispersed in water and then tested, such as figure 2 As shown, the dispersibility of the graphene composite powder material is better.

Embodiment (2

[0080] Weigh 0.01g of polyvinylpyrrolidone, 1g of graphene material and 0.1g of conductive carbon black (super-P), and disperse them in 1L of deionized water, stir them evenly and spray dry them.

[0081] After measurement, the electrical conductivity of the obtained graphene composite powder material is ≥3500S / m, and the apparent density is 0.15g / cm 3 .

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Abstract

The invention relates to a graphene composite powder material comprising a graphene material and a micro-nano structural material attached to the surface of the graphene material. The micro-nano structural material is uniformly dispersed in the graphene material and is compounded with the graphene material by virtue of chemical bonds or physical effects. The graphene composite powder material is good in dispersity and less in clustering possibility. The invention also relates to a preparation method of the graphene composite powder material.

Description

technical field [0001] The invention relates to graphene materials, in particular to a graphene composite powder material composed of micro-nano materials. Background technique [0002] Graphene material is a honeycomb network structure composed of carbon atoms through sp2 hybridization, and is a two-dimensional material with a thickness of only one carbon atom. Graphene materials have attracted great research interest due to their excellent electrical, optical, thermal and mechanical properties. [0003] At present, the preparation methods of graphene materials include mechanical exfoliation method, oxidation-reduction method, crystal epitaxial growth method, chemical vapor deposition method, organic synthesis method and exfoliation carbon nanotube method. Among them, the oxidation-reduction method has become a common method for preparing graphene materials because of its easy implementation and low cost. However, the density of the graphene material prepared by this meth...

Claims

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Application Information

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IPC IPC(8): C01B31/04
Inventor 刘兆平周旭峰唐长林秦志鸿胡建国王国华赵永胜
Owner NINGBO MORSH TECH
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