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Paper-based supercapacitor electrode material preparation method

A technology for supercapacitors and electrode materials, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors. The effect of increasing the specific surface area

Active Publication Date: 2018-05-22
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of graphite paper is cumbersome, requires high equipment, and its toughness problem restricts the further application of this material

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0021] A kind of preparation method of paper-based supercapacitor electrode, described preparation method is carried out according to the following steps:

[0022] A 20wt% graphite powder, 25wt% epoxy resin and 55wt% N,N-dimethylformamide are mixed to prepare printable colloidal graphite, the paper is placed under the screen printing screen, and the colloidal Graphite is repeatedly coated on the screen printing screen with a screen printing scraper, and colloidal graphite layers are formed on the upper and lower surfaces of the paper respectively to obtain interlayer graphite / paper.

[0023] B Mix 10-20g of carbonate, 0.01-0.1g of surfactant and 200ml of distilled water to prepare a carbonate solution, and mix 20-30g of nitrate, 0.01-0.1g of surfactant and 200ml of distilled water to prepare a nitrate solution. The interlayered graphite / paper obtained in step A is immersed in carbonate solution and nitrate solution successively, and electrochemically treated sequentially at a ...

Embodiment 1

[0032] A mixes 20wt% graphite powder with a radius of 0.1 micron, 25wt% epoxy resin and 55wt% N,N-dimethylformamide to prepare printable colloidal graphite, and put the paper on the screen printing screen Next, the colloidal graphite is repeatedly coated on the screen printing screen with a screen printing blade, and colloidal graphite layers are formed on the upper and lower surfaces of the paper respectively to obtain interlayer graphite / paper.

[0033] B Mix 10g of sodium carbonate, 0.01g of cetyltrimethylammonium bromide and 200ml of distilled water to prepare a carbonate solution, and prepare by mixing 30g of sodium nitrate, 0.01g of cetyltrimethylammonium bromide and 200ml of distilled water Nitrate solution, soak the interlayered graphite / paper obtained in step A successively in carbonate solution and nitrate solution, and perform linear scan voltammetry at a scan rate of 0.01V / s at a voltage of -2 to 2V. Electrochemical treatment for 10 times, so that the interlayer gr...

Embodiment 2

[0037] A mixes 20wt% graphite powder, 25wt% epoxy resin and 55wt% N,N-dimethylformamide with a radius of 0.5 microns to prepare printable colloidal graphite, and put the paper on the screen printing screen Next, the colloidal graphite is repeatedly coated on the screen printing screen with a screen printing blade, and colloidal graphite layers are formed on the upper and lower surfaces of the paper respectively to obtain interlayer graphite / paper.

[0038] B mix 10g of potassium carbonate, 0.1g of cetyltrimethylammonium bromide, 0.1g of sodium dodecylbenzenesulfonate and 200ml of distilled water to prepare a carbonate solution, mix 20g of potassium nitrate, 0.1g of cetyl Trimethyl ammonium bromide, 0.1g sodium dodecylbenzene sulfonate and 200ml distilled water mix and prepare nitrate solution, the interlayer graphite / paper that step A obtains is soaked in carbonate solution and nitrate solution successively, in Under the voltage of -2 ~ 2V, the electrochemical treatment of cyc...

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Abstract

The invention provides a paper-based supercapacitor electrode material preparation method, which belongs to the technical field of new energy materials. Paper becomes an important electrode material substrate due to own characteristics and is widely applied to various flexible energy storage devices. A screen printing method is used to print colloidal graphite on the paper, the paper is then immersed in a carbonate solution and a nitrate solution in sequence, an electrochemical method is adopted for processing, and the colloidal graphite forms a partially-stripped flake structure. Polypyrroleis then deposited by in-situ polymerization, and finally, through naphthalene sulfonic acid doping, a paper-based supercapacitor electrode material with a thickness of 0.15 millimeter is obtained. Thepreparation method has the advantages of simple process, low device requirements and industrial production, and when the paper-based supercapacitor electrode material is applied to the supercapacitor, the specific capacity is high, the stability is good, the conductivity is high, and industrial production of a high-performance supercapacitor is facilitated.

Description

technical field [0001] The invention relates to a preparation method of a paper-based supercapacitor electrode material, which belongs to the technical field of new energy materials. Background technique [0002] Paper is cheap, foldable, environmentally friendly and widely used in everyday life. Typically, paper is composed of cellulose fibers about 20 microns in diameter. In recent years, paper is emerging as a promising flexible substrate for various electronic devices such as solar cells, transistors, displays, and energy storage. The realization of paper-based devices is highly desirable not only for their wide applications but also for their compatibility with printed electronics. Aiming at paper's low cost, environment-friendly nature and wide range of applications, paper was developed for the substrate of our supercapacitors. Carbon materials, as the most typical electrode materials for electrochemical double-layer capacitors, have been extensively studied in the ...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/32
CPCY02E60/13H01G11/86H01G11/32
Inventor 许杰饶维达范玲玲魏成卓黄乐平包海峰徐卫林
Owner WUHAN TEXTILE UNIV
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