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Process for the preparation of graphene

A graphene and dispersion technology, applied in the field of graphene dispersion preparation, can solve problems such as difficulty in achieving direct dispersion of graphite or graphene sheets

Inactive Publication Date: 2014-07-16
UNIV OF WOLLONGONG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is generally accepted that direct dispersion of graphite or graphene flakes in water is difficult to achieve due to its hydrophobic nature

Method used

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  • Process for the preparation of graphene
  • Process for the preparation of graphene
  • Process for the preparation of graphene

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Embodiment Construction

[0016] The present invention relates to a method for preparing graphene dispersions.

[0017] Graphene is essentially a single layer of graphite or graphite nanoplatelets, usually in the form of graphene sheets.

[0018] Graphite nanoflakes have recently attracted considerable attention as a viable and inexpensive filler to replace carbon nanotubes in nanocomposites, based on the prediction that graphite possesses excellent in-plane mechanical, structural, thermal, and electrical properties. force. As with carbon nanotubes, the full utilization of graphitic nanoflakes in polymer nanocomposite applications will inevitably depend on the ability to achieve complete dispersion of the nanoflakes in the chosen polymer matrix.

[0019] Graphene prepared by the method of the present invention is in the form of graphene dispersions, including aqueous graphene dispersions, enabling further functionalization of the graphene sheets using solution phase chemistry.

[0020] The method of ...

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Abstract

The present invention relates to a method for the preparation of graphene which can be used to develop graphene paper or graphene film, graphene-based composites for nanoelectronics, nanocomposites, batteries, supercapacitors, hydrogen storage and biological applications objects and products. This method involves the reduction of purified, exfoliated graphite oxide in the presence of a base.

Description

technical field [0001] The present invention relates to a method for the preparation of graphene dispersions, which can be used to develop graphene paper or graphene films for nanoelectronics, nanocomposites, batteries, supercapacitors, hydrogen storage and biological applications, based on Graphene composites and products. Background technique [0002] Graphene is essentially a single layer of graphite. like Figure 9 As shown, graphene can also be considered as expanded carbon nanotubes. [0003] Graphene sheets offer many extraordinary properties and are being investigated for use in nanoelectronics, nanocomposites, batteries, supercapacitors, hydrogen storage, and biological applications. The main limitation of using graphene sheets is that they cannot currently be produced in large quantities. Similar to carbon nanotubes and many other nanomaterials, a key challenge in the synthesis and processing of large numbers of graphene sheets is aggregation. Unless completely...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/04B82B3/00C01B31/02B82B1/00C01B31/00
CPCB82Y30/00B82Y40/00C01B31/0206H01B1/24C01P2002/72C01P2002/84C01P2002/88C01P2004/03C01P2004/24C01B32/15
Inventor 戈登·乔治·华莱士李丹
Owner UNIV OF WOLLONGONG
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