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Preparation method and application of indanthrene functionalized graphene three-dimensional network structure composite material

A technology of indanthrene and network structure, applied in the direction of hybrid capacitor electrodes, etc., can solve the problem of low power density

Inactive Publication Date: 2020-02-11
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, they have a lower power density compared to conventional batteries

Method used

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  • Preparation method and application of indanthrene functionalized graphene three-dimensional network structure composite material
  • Preparation method and application of indanthrene functionalized graphene three-dimensional network structure composite material
  • Preparation method and application of indanthrene functionalized graphene three-dimensional network structure composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Preparation of IT-RGO-1 composite material:

[0032] Disperse 0.1 g of graphite oxide (GO) in 15 mL of DMF, stir for 1 h, and then sonicate for 4 h; dissolve 0.02 g of indanthrene in 10 mL of secondary water, and stir for 2 h; Pour into the indanthrene solution, stir for 1 h, and then ultrasonically treat for 4 h; then transfer the mixed solution to a 30 mL high-temperature reactor, and react at 180°C for 720 min. The reaction product is soaked in secondary water for several times until the solution becomes colorless and transparent, and finally the product is freeze-dried, which is the IT-RGO-1 composite material;

[0033] 2. Preparation of IT-RGO-1 composite electrode: 4 mgIT-RGO-1 and 0.7 mg acetylene black (mass ratio 85:15) were thoroughly ground in a mortar, and then 0.4 mL0. 25 wt% Nafion solution, ultrasonically dispersed to form a suspension; then use a pipette gun to measure 6 μL of the above suspension and drop it on the surface of the glassy carbon elect...

Embodiment 2

[0036] 1. Preparation of IT-RGO-2 composite material:

[0037] 0.1 gGO was dispersed in 15 mL of DMF, stirred for 1 h, and then sonicated for 4 h. Dissolve 0.05 g of indanthrene in 10 mL of secondary water and stir for 2 h; add the ultrasonically treated GO dispersion into the indanthrene solution, stir for 1 h, and then sonicate for 4 h; then transfer the mixed solution to In a 30 mL high-temperature reactor, react at 180°C for 720 min. The reaction product was soaked in secondary water for several times until the solution became colorless and transparent, and finally the product was freeze-dried to obtain the IT-RGO-2 composite material;

[0038] 2. The preparation of the IT-RGO-2 composite electrode is the same as in Example 1;

[0039] 3. Electrochemical performance test: the detection method is the same as in Example 1; the detection result: when the current density is 1 A g -1 , the specific capacitance of the electrode material can reach 327Fg -1 .

Embodiment 3

[0041] 1. Preparation of IT-RGO-3 composite material:

[0042] Disperse 0.1 g graphite oxide (GO) in 15 mL of DMF, stir for 1 h, then sonicate for 4 h; dissolve 0.07 g of indanthrene in 10 mL of secondary water, stir for 2 h; disperse GO after ultrasonic treatment The liquid was put into the indanthrene solution, stirred for 1 h, and then ultrasonically treated for 4 h; then the mixed solution was transferred to a 30 mL high-temperature reactor, and reacted at 180°C for 720 min. The reaction product was soaked in secondary water for several times until the solution became colorless and transparent, and finally the product was freeze-dried to obtain the IT-RGO-3 composite material;

[0043] 2. The preparation of the IT-RGO-3 composite electrode is the same as in Example 1;

[0044] 3. Electrochemical performance test: the detection method is the same as in Example 1; the detection result: when the current density is 1 A g -1 , the specific capacitance of the electrode materia...

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Abstract

The invention discloses a preparation method of an indanthrene functionalized graphene three-dimensional network structure composite material. The method comprises steps of dispersing graphite oxide into DMF (Dimethyl Formamide), stirring, carrying out ultrasonic treatment, adding mixture into shinthrene solution, stirring again, and carrying out ultrasonic treatment; transferring the mixed solution into a reaction kettle, and carrying out a reaction for 620-720 min at a temperature of 160-180 DEG C; soaking a reaction product with secondary water for multiple times till the solution becomes colorless and transparent; and lastly performing freeze-drying to obtain the product. The method is advantaged in that physical characterization shows that a composite material has a high specific surface area and rich hierarchical porous structures which are communicated with one another, and indanthrene molecules are successfully adsorbed on a surface of graphene. An electrochemical performance test shows that the material has excellent electrochemical capacitance performance and rate capability, more importantly, a potential window of the material can reach 1.2V in sulfuric acid electrolyte / solution, and the material has a good application prospect as an electrode material of a supercapacitor.

Description

technical field [0001] The invention relates to the preparation of a graphene-based composite material, in particular to the preparation of a three-dimensional network structure composite material of indanthrene functionalized graphene; The application of materials as electrode materials in supercapacitors belongs to the technical field of composite materials and the technical field of supercapacitors. Background technique [0002] Supercapacitors have the characteristics of fast power output, strong reversibility, low maintenance cost, fast charge and discharge speed, and long cycle life. They play an important role in supplementing batteries in many applications and are also considered as an ideal energy source. Conversion and storage devices. Compared with traditional capacitors, the energy density of supercapacitors is several orders of magnitude higher. However, they have a lower power density than conventional batteries. Therefore, supercapacitors urgently need a fe...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/36H01G11/24
CPCH01G11/24H01G11/30H01G11/36Y02E60/13
Inventor 胡中爱谢彦东
Owner NORTHWEST NORMAL UNIVERSITY
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