Graphene/polypyrrole nanotube composite thin film based fabrication method of supercapacitor

A technology of polypyrrole nanotubes and supercapacitors, which is applied in the manufacture of hybrid/electric double layer capacitors, electrodes of hybrid capacitors, nanotechnology for materials and surface science, etc. Soluble in water and other problems, to achieve the effect of simple preparation method, preventing agglomeration and good flexibility

Inactive Publication Date: 2016-11-16
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, pure polypyrrole is insoluble in water, difficult to process, difficult to form a film, and cannot be directly used in the construction of flexible supercapacitors.

Method used

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  • Graphene/polypyrrole nanotube composite thin film based fabrication method of supercapacitor
  • Graphene/polypyrrole nanotube composite thin film based fabrication method of supercapacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of composite film supercapacitor based on graphene / polypyrrole nanotubes, the specific steps are as follows:

[0031] (1) Get 50mg of graphene oxide and add it to distilled water, and disperse to obtain a uniformly dispersed graphene oxide solution with a concentration of 1 mg / mL;

[0032] (2) Add 50mg polypyrrole nanotubes to the graphene oxide dispersion obtained above, after ultrasonic dispersion for 2h, suction filter to obtain graphene oxide / polypyrrole nanotube composite film;

[0033] (3) immerse the graphene oxide / carbon nanotube composite film obtained in the hydroiodic acid solution, obtain the graphene / polypyrrole nanotube composite film after reduction reaction 6h;

[0034] (4) get the graphene / polypyrrole nanotube composite film that obtains in two (3), PVA+H 2 SO 4 The solid electrolyte is evenly coated in the middle of the two films, and a composite film supercapacitor based on graphene / polypyrrole nanotubes is assembled.

[0035] from fig...

Embodiment 2

[0038] Preparation of composite film supercapacitor based on graphene / polypyrrole nanotubes, the specific steps are as follows:

[0039] (1) Get 50 mg of graphene oxide and add it to alcohol, and disperse to obtain a uniformly dispersed graphene oxide solution with a concentration of 0.1 mg / mL;

[0040] (2) Add 100mg polypyrrole nanotubes to the graphene oxide dispersion obtained above, after ultrasonic dispersion for 3h, suction filter to obtain graphene oxide / polypyrrole nanotube composite film;

[0041] (3) immerse the obtained graphene oxide / polypyrrole nanotube composite film in the hydroiodic acid solution, and obtain the graphene / polypyrrole nanotube composite film for reduction reaction 6h;

[0042] (4) get the graphene / polypyrrole nanotube composite film that obtains in two (3), PVA+H 2 SO 4 The solid electrolyte is evenly coated in the middle of the two films, and a composite film supercapacitor based on graphene / polypyrrole nanotubes is assembled.

Embodiment 3

[0044] Preparation of composite film supercapacitor based on graphene / polypyrrole nanotubes, the specific steps are as follows:

[0045] (1) Get 200mg of graphene oxide and add it to distilled water, and disperse to obtain a uniformly dispersed graphene oxide solution with a concentration of 4 mg / mL;

[0046] (2) Add 75mg polypyrrole nanotubes to the graphene oxide dispersion obtained above, after ultrasonic dispersion for 4h, suction filtration, obtain graphene oxide / polypyrrole nanotube composite film;

[0047] (3) immerse the obtained graphene oxide / polypyrrole nanotube composite film in the hydrochloric acid / potassium iodide mixed solution, and obtain the graphene / polypyrrole nanotube composite film for reduction reaction 24h;

[0048] (4) get the graphene / polypyrrole nanotube composite film that obtains in two (3), PVA+Na 2 SO 4 The solid electrolyte is uniformly coated in the middle of the two films, and a composite film supercapacitor based on graphene / polypyrrole nan...

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Abstract

The invention relates to a preparation method for a graphene/polypyrrole nanotube composite film supercapacitor, comprising: 1) dispersing graphene oxide into a dispersant to obtain a graphene oxide dispersion with a certain concentration; 2) adding graphene oxide to graphite oxide Adding polypyrrole nanotubes to the ene dispersion, suction filtration after ultrasonic dispersion, to obtain a graphene oxide/polypyrrole tube composite film; 3) reducing the obtained graphene oxide/polypyrrole nanotube composite film to obtain a graphene/polypyrrole composite film tube composite film; 4) taking two graphene/polypyrrole nanotube composite films obtained in step 3), coating the electrolyte between the two films, and assembling to obtain a supercapacitor. The preparation method of the present invention is simple, and the prepared supercapacitor has good flexibility, and has broad application prospects in wearable electronic devices; in addition, the capacitance performance of the supercapacitor can be adjusted by adjusting the graphene oxide and The relative content of polypyrrole nanotubes can be adjusted.

Description

technical field [0001] The invention relates to a preparation method of a graphene / polypyrrole nanotube composite film supercapacitor, which belongs to the technical field of novel capacitor electrode materials and electrochemical energy storage. Background technique [0002] With the rapid development of portable electronic devices, and the feasibility of applying miniature electronic devices to wearable devices has been increasingly recognized, the preparation of stretchable or bendable flexible electronic devices to replace traditional hard electronic devices becomes more and more important. Among them, how to solve the energy storage problem of these flexible electronic devices is one of the important issues. [0003] Due to the characteristics of high energy density and power density, high specific capacitance, good cycle performance and fast charging process, supercapacitors have attracted great attention from researchers at home and abroad. However, the existing sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/84H01G11/86H01G11/48H01G11/36B82Y30/00B82Y40/00
CPCY02E60/13H01G11/84B82Y30/00B82Y40/00H01G11/36H01G11/48H01G11/86
Inventor 李亮刘玉兰佘潇黄华波喻湘华张桥刘辉
Owner WUHAN INSTITUTE OF TECHNOLOGY
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