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Preparation of graphene/poly(1,3,6,8-tetrathiophenepyrene) nano-scroll composite material

A composite material and thiophene pyrene technology, applied in the field of materials, can solve the problems of low power storage capacity of supercapacitors and inability to retain electrons for a long time, and achieve high power storage capacity and electron transmission capacity, stable capacitance value, and increased structural stability. Effect

Inactive Publication Date: 2017-11-17
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if pure graphene is used to prepare the electrode of the supercapacitor, due to its very fast electron transport ability, when the electrons are transferred from the positive electrode of the supercapacitor to the negative electrode, the electrons cannot be retained for a long time, making the storage capacity of the supercapacitor very low.

Method used

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  • Preparation of graphene/poly(1,3,6,8-tetrathiophenepyrene) nano-scroll composite material
  • Preparation of graphene/poly(1,3,6,8-tetrathiophenepyrene) nano-scroll composite material
  • Preparation of graphene/poly(1,3,6,8-tetrathiophenepyrene) nano-scroll composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Preparation of poly(1,3,6,8-tetrathienpyrene) and corresponding graphene nanovolumes

[0026] Slowly dissolve 1,3,6,8-tetrathienpyrene (250mg, 0.375mmol) in 12mL of chlorobenzene, and dissolve anhydrous ferric chloride (0.3g.1.6mmol) in nitromethane (1.5mL ), under nitrogen bubbling and stirring, the ferric chloride solution was added dropwise to the 1,3,6,8-tetrathienpyrene solution, and after the addition was complete, the reaction system was placed in a 45-degree oil bath Continue to stir for 24 hours, cool down to room temperature, and after a large amount of solid precipitates, filter the precipitated solid with suction, wash the filtered solid with 30mL × 3 chloroform, and finally obtain orange-red flake poly(1,3,6,8-tetrathienpyrene ). Take 20mg, 10mg graphene oxide and 15mL N,N-dimethylacetamide and disperse them in a 50mL microwave reaction tube, put them into an ultrasonic machine and sonicate for 1 hour to obtain a brick red suspension, add 1.5mL ...

Embodiment 2

[0027] Example 2: Preparation of poly(1,3,6,8-tetrathienpyrene) and corresponding graphene nanovolumes

[0028] Slowly dissolve 1,3,6,8-tetrathienpyrene (500mg, 0.75mmol) in 20mL o-dichlorobenzene, and dissolve anhydrous ferric chloride (0.7g.3.4mmol) in nitromethane ( 4mL), under nitrogen bubbling and stirring, the ferric chloride solution was added dropwise to the 1,3,6,8-tetrathienpyrene solution. After the addition was complete, the reaction system was placed in a 60-degree oil bath Continue to stir for 36 hours, cool down to room temperature, and after a large amount of solids precipitate, the precipitated solids are suction-filtered, and the filtered solids are washed with 30mL×3 chloroform, and finally reddish-brown poly(1,3,6,8-tetrathienpyrene) is obtained. powder. Take 30mg, 30mg of graphene oxide and 25mL of N,N-dimethylacetamide and disperse them in a 50mL microwave reaction tube, put them into an ultrasonic machine and sonicate for 1 hour to obtain a brown-red su...

Embodiment 3

[0029] Embodiment 3: supercapacitor performance test CV test

[0030] In the electrode preparation process, nickel foam is selected as the current collector of the electrode sheet, and the nickel foam electrode sheet is cut into a regular circle, and then the cut electrode sheet is placed in a tablet press and pressed to one-third of the original thickness slices, and then slightly cut around the slices. Finally, the round nickel foam disc was dried in a vacuum oven at 100 °C for 12 h. After drying, weigh the mass of the nickel foam disc and record it as m 0 . The graphene oxide nano-volume prepared in Example 1 is ground into powder, according to the graphene nano-volume of 75:20:5: acetylene black: the proportioning of polytetrafluoroethylene (PTFE), puts into the mortar, adds a little non-toxic Grind water and ethanol clockwise until it becomes a paste, apply a medicine spoon evenly on one side of the nickel foam until the color of the nickel foam itself cannot be seen cle...

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Abstract

The invention discloses a preparation method of a graphene / poly(1,3,6,8-tetrathiophenepyrene) nano-scroll composite material. The method comprises the steps: mixing poly(1,3,6,8-tetrathiophenepyrene) and oxidized graphene, and preparing a nano-scroll structure through in-situ reduction, wherein the nano-scroll structure can serve as an electrode material of a supercapacitor. The invention relates to the preparation of the graphene / poly(1,3,6,8-tetrathiophenepyrene) nano-scroll composite material. The material serves as the electrode material of the supercapacitor, so a higher specific capacitance value can be obtained. The method is simple, and the working state is stable and reliable, so the method is worthy of being discloses and protected.

Description

technical field [0001] The invention relates to the preparation of graphene / poly(1,3,6,8-tetrathiophene pyrene) nano-volume composite material, belonging to the field of material technology. Background technique [0002] Graphene, a new type of two-dimensional carbon nanomaterial with a thickness of one atom, has many special advantages, such as ultra-high specific surface area, fast electron transport ability, excellent mechanical and mechanical properties, remarkable thermal conductivity, and extraordinary Elastic properties, these properties make graphene a very potential material, and can be used in various industries, such as lithium-ion batteries, super capacitors, solar cells, transparent electrodes, electronic transistors, biosensing detection, gas storage And so on in many ways. However, pure graphene materials are easy to form stacking and agglomeration in the process of technical preparation, so the introduction of graphene-based composite materials not only maxi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/48H01G11/36H01G11/24B82Y40/00
CPCY02E60/13H01G11/86B82Y40/00H01G11/24H01G11/36H01G11/48
Inventor 汪联辉赵保敏王正傅妮娜王一姣
Owner NANJING UNIV OF POSTS & TELECOMM
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