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

A technology of graphene film and heterostructure, applied in the direction of graphene, chemical instruments and methods, carbon compounds, etc., to achieve the effects of strong electricity production capacity, improved practicability, and good stability

Active Publication Date: 2020-01-14
TSINGHUA UNIV
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  • Preparation method of heterostructure porous graphene oxide membrane, graphene membrane and generator
  • Preparation method of heterostructure porous graphene oxide membrane, graphene membrane and generator
  • Preparation method of heterostructure porous graphene oxide membrane, graphene membrane and generator

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[0041] Such as figure 1 Shown, this heterostructure porous graphene oxide membrane 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 the freeze-drying method to prepare the 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 °...

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Abstract

Disclosed are a method for preparing a heterostructured porous graphene oxide film, a graphene film and an electric generator, wherein the method includes the following steps: freeze-drying a graphene oxide solution to obtain a graphene oxide aerogel; heating the graphene oxide aerogel from the bottom to reduce same in order to obtain a bottom partially-reduced graphene oxide aerogel; and applying pressure to the bottom partially-reduced graphene oxide aerogel in the vertical direction to obtain the heterostructured porous graphene oxide film. The method provides the heterostructured porous graphene oxide film by carrying out freeze drying, bottom heating reduction and vertical pressure application. The raw materials required for the preparation are mature in synthesis technology, widely available in terms f source, inexpensive, are easily obtained, and can be mass-produced, thereby effectively improving the practicability, economy and efficiency of preparation, and being simple and easily implemented.

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 Patents(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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