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Preparation method of flexible super capacitor based on paper and application thereof

A supercapacitor and paper technology, applied in the field of preparation of supercapacitors, can solve the problems of increased volume and weight of capacitors, unsuitable for portable electronic devices, etc., and achieve the effects of easy production control, suitable for large-scale production, and good electrochemical characteristics

Active Publication Date: 2012-07-11
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the current preparation methods of supercapacitors, strong acids or strong alkalis are usually used as liquid electrolytes. In order to prevent electrolyte leakage, very tight packaging is required, resulting in increased volume and weight of capacitors, which are not suitable for use in portable electronic devices.

Method used

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  • Preparation method of flexible super capacitor based on paper and application thereof
  • Preparation method of flexible super capacitor based on paper and application thereof
  • Preparation method of flexible super capacitor based on paper and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] 1. Cut the printing paper into a suitable size, immerse it in a certain concentration of polyvinyl alcohol aqueous solution, take out and dry the excess water after the paper is soaked.

[0025] 2. Use the paper treated by the above method as a substrate, and use electron beams to evaporate a copper film with a certain thickness. It is enough that the copper film does not fall off under the folding condition.

[0026] 3. A polyaniline film with a suitable thickness is grown on the above-mentioned paper deposited with the copper film by solution polymerization. The thickness of the film can be selected and determined according to the actual situation, as long as the thickness of the polyaniline does not fall off, for example, it can be 10-100 microns.

[0027] 4. Take two pieces of paper with polyaniline film grown above and soak them in a mixed solution of polyvinyl alcohol and phosphoric acid at a certain concentration, take them out after a period of time and stick t...

Embodiment 2

[0030] 1. Dissolve a certain quality of polyvinylidene fluoride in methylpyrrolidone, soak a suitable size of newsprint, take it out after the paper is completely soaked, and wait for the solvent to evaporate completely.

[0031] 2. Utilize the magnetron sputtering method to prepare a gold film with a suitable thickness on the above-mentioned treated paper. The thickness of the film can be selected and determined according to the actual situation, as long as the conductivity of the gold film is good and it does not fall off.

[0032] 3. Immerse the paper deposited with the gold film in a mixed solution of a certain concentration of manganese acetate and ammonium acetate, and deposit a certain amount of manganese oxide on the gold film by electrodeposition.

[0033] 4. Take two sheets of paper deposited with manganese oxide and soak them in a mixed solution of polyvinyl alcohol and sulfuric acid at a certain concentration for a certain period of time, then take them out and sti...

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Abstract

The invention discloses a preparation method of a flexible super capacitor based on paper and application thereof in a self-drive system. The preparation method concretely comprises the following steps: firstly depositing a layer of non-conductive polymer on the surface of the paper; secondly, depositing a metal membrane on the surface of the processed paper to form a flexible conductive paper substrate; thirdly, preparing a metal oxide or a conductive polymer on the conductive substrate to form an electrode material; and finally, assembling two electrode materials by adopting a solid electrolyte to form a super capacitor. The flexible full-solid super capacitor prepared by the method has good bending property and electrochemical properties and has good application prospect in the aspects of energy storage and energy management, especially in the self-drive system.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, and in particular relates to a preparation method of a supercapacitor and its application in a self-driving system. Background technique [0002] With the huge demand for all kinds of energy in modern society, finding clean and renewable energy has become a common concern of all countries in the world. Solar energy and wind energy are good green energy sources, but they are actually intermittent energy sources. For example, at night or on rainy days, the efficiency of solar energy acquisition will be greatly reduced; and wind energy cannot guarantee energy supply around the clock throughout the year. Some other energy harvesting technologies, such as nanogenerators, can effectively convert tiny kinetic energy in the surrounding environment into electrical energy, but their low power output makes these technologies unable to continuously drive small electronic devices. These limitations c...

Claims

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Application Information

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IPC IPC(8): H01G9/155H01G9/058H01G11/22H01G11/86
CPCY02E60/13
Inventor 周军袁龙炎肖旭丁天朋胡彬
Owner HUAZHONG UNIV OF SCI & TECH
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