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Preparation method of heterostructure porous graphene oxide membrane, graphene membrane and electric generator

A technology of graphene film and heterostructure, applied in graphene, chemical instruments and methods, inorganic chemistry, etc., to achieve the effects of wide sources, strong power generation capacity, and high quality

Active Publication Date: 2018-11-06
TSINGHUA UNIV
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  • Preparation method of heterostructure porous graphene oxide membrane, graphene membrane and electric generator
  • Preparation method of heterostructure porous graphene oxide membrane, graphene membrane and electric generator
  • Preparation method of heterostructure porous graphene oxide membrane, graphene membrane and electric generator

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[0041] Such as figure 1 Shown, this heterostructure porous graphene oxide film preparation method comprises the following steps:

[0042] In step S101, the graphene oxide solution is freeze-dried to obtain graphene oxide airgel.

[0043] It can be understood that, in the embodiment of the present invention, the graphene oxide solution (3-15 mg / mL) is freeze-dried by freeze-drying method to prepare graphene oxide airgel (3-15 mg / cm 3 ). Wherein, the freeze-drying time is 24-72 hours.

[0044]Further, in one embodiment of the present invention, the preparation process of the graphene oxide solution includes: stirring and mixing 9g of graphite powder, 240mL of concentrated sulfuric acid, and 4.5g of sodium nitrate in an ice bath; adding 27g of potassium permanganate , and continue to stir for 1 hour; stir for two hours after raising the temperature to 30 ° C, and add 450 mL of deionized water after stirring; stir for 20 minutes after raising the temperature to 90 ° C, and add ...

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Abstract

The invention discloses a preparation method of a heterostructure porous graphene oxide membrane, a graphene membrane and an electric generator, wherein the method comprises the following steps: freeze-drying and preparing a graphene oxide solution to obtain a graphene oxide aerogel; heating and reducing the graphene oxide aerogel from the bottom to obtain the graphene oxide aerogel whose bottom is partially reduced; applying pressure on the graphene oxide aerogel whose bottom is partially reduced in the vertical direction to obtain the heterostructure porous graphene oxide membrane. The heterostructure porous graphene oxide membrane is obtained by freeze-drying the graphene oxide solution, heating and reducing the bottom of the graphene oxide aerogel and applying pressure in the verticaldirection, the synthesis technology for preparing the required raw materials is mature, the source is wide, the raw material is cheap and is easy to get, the graphene membrane can be produced in batches, so that the practicality, the economical efficiency and the efficiency of preparation are effectively improved, and the preparation is simple and is easy to implement.

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to a method for preparing a porous graphene oxide film with a heterogeneous structure, a graphene film and a generator. Background technique [0002] Graphene is a two-dimensional planar material with a single atomic layer. It has a huge specific surface area and excellent mechanical and electrical properties. It has been widely used in the research of energy conversion and storage, gas sensing, and bionic smart devices. Graphene oxide is graphene rich in aerobic functional groups, and its surface is rich in carbonyl, hydroxyl and carboxyl groups. Assembling graphene oxide into fibrous, film-like and three-dimensional structural materials will greatly expand the application fields of graphene materials. [0003] Studies have proved that graphene oxide can absorb moisture in the air and interact with its oxygen-containing functional groups to generate freely mobile hydr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/198C01B32/184C01B32/194
CPCC01B32/184C01B32/194C01B32/198
Inventor 曲良体程虎虎黄亚鑫
Owner TSINGHUA UNIV
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