Preparation method of high compressive strength graphene composite aerogel
A graphene composite and aerogel technology, applied in chemical instruments and methods, colloid chemistry, colloid chemistry, etc., can solve problems such as not being able to fully utilize the advantages of single-layer graphene
Active Publication Date: 2019-06-25
TAIYUAN UNIV OF TECH
View PDF12 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in practical applications, due to the strong π-π interaction between graphene sheets, serious stacking occurs between graphene sheets, so the unique advantages of single-layer graphene cannot be fully utilized.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0030] The chemical substance material used in the present invention is: pyrrole, dimethylformamide, graphite oxide, nitrogen, dehydrated alcohol, deionized water, anhydrous ferrous chloride, ascorbic acid, hydrogen peroxide, and its preparation dosage is as follows: in g, mL 、cm 3 is the unit of measurement.
[0031] Pyrrole: C 4 h 5 N: 3mL ± 0.0001mL;
[0032] Anhydrous Ferrous Chloride: FeCl 2 : 0.2 g ± 0.0001 g; hydrogen peroxide: H 2 o 2 Concentration 30wt%: 5 mL ±0.0001mL;
[0033] Dimethylformamide: C 3 h 7 NO: 0.7mL±0.001mL;
[0034] Deionized water: H 2 O: 5000mL ± 10mL; graphite oxide: C x h y o z : 0.021 g±0.0001 g; Ascorbic acid: C 6 h 8 o 6 : 0.036g±0.0001g;
[0035] Absolute ethanol: CH 3 CH 2 OH: 1000mL±10mL.
[0036] The chemical substances and materials used in the preparation should be carefully selected, and the quality, purity, concentration and content should be controlled:
[0037] Pyrrole: liquid liquid, concentration 99%; anhydrous ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| porosity | aaaaa | aaaaa |
Login to View More
Abstract
Belonging to the field of carbon material preparation, surface functional modification and application, the invention provides a preparation method of a high compressive strength graphene composite aerogel. Good wettability polypyrrole spheres obtained by green synthesis at room temperature and graphite oxide are adopted as the precursor, dimethylformamide is utilized to regulate the disperse state of graphite oxide in water, the precursor undergoes liquid phase reduction self-assembly initiated by ascorbic acid in the non-pure water environment, and freeze drying is conducted to synthesize graphene composite aerogel. The synthesized graphene composite aerogel is black cylindrical, and the polypyrrole spheres and graphene sheets support each other. The aerogel presents a cross-linked three-dimensional network structure, has a porosity up to 99.65%, a block density of 7.8 mg cm<-3>, a specific surface area of 668 m<2> g<-1>, and a Young's modulus of 45.33 kPa. Therefore, the method is an advanced preparation method.
Description
technical field [0001] The invention belongs to the technical field of carbon material preparation, surface functional modification and application, and in particular relates to a preparation method of graphene composite airgel with high compressive strength. Background technique [0002] Single-layer graphene has excellent physical and chemical properties: high electrical conductivity, high thermal conductivity, high strength and high specific surface area, and is highly sought after by the scientific research community. However, in practical applications, due to the strong π-π interaction between graphene sheets, serious stacking occurs between graphene sheets, so the unique advantages of single-layer graphene itself cannot be fully utilized. [0003] To solve this drawback, it is a feasible strategy to assemble polypyrrole spheres and graphene into a composite airgel with a three-dimensional network structure by liquid-phase reduction self-assembly technology. The cross-...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/00
Inventor 刘旭光张二辉刘伟峰杨永珍赵宏
Owner TAIYUAN UNIV OF TECH