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Electrode material of super-capacitor and preparation method thereof as well as super-capacitor manufactured by electrode material

A technology of supercapacitors and electrode materials, applied in capacitors, electrolytic capacitors, solid electrolytic capacitors, etc., can solve the problems of large device volume and high device packaging requirements, and achieve the effect of simple preparation process, low cost and good flexibility

Inactive Publication Date: 2012-12-26
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used supercapacitors are mainly limited by the electrode materials and electrolytes, which have high requirements for the packaging of the device, and the volume of the device is also large.

Method used

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  • Electrode material of super-capacitor and preparation method thereof as well as super-capacitor manufactured by electrode material
  • Electrode material of super-capacitor and preparation method thereof as well as super-capacitor manufactured by electrode material
  • Electrode material of super-capacitor and preparation method thereof as well as super-capacitor manufactured by electrode material

Examples

Experimental program
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Effect test

Embodiment 1

[0037]The polyvinylidene fluoride and potassium carbonate are weighed according to the ratio of 77% by mass: 23%, and the weighed raw materials are mixed uniformly, and the uniformly mixed raw materials are fully dissolved into a mixed solution with a DMF solvent to form a sol; then Evenly coat the mixed sol on the graphite paper substrate, and after drying in a constant temperature drying oven, a composite film will be formed on the graphite paper; heat treat the composite film at 220°C for 60 minutes, and heat-treat the composite Soak the film in potassium hydroxide solution for 30 minutes, take it out, and then activate the soaked composite film at 200°C for 30 minutes, thus preparing the electrode material of the flexible supercapacitor with polyvinylidene fluoride composite film ; Then use the mixed solution of polyvinyl alcohol and potassium hydroxide electrolyte as an adhesive to bond the two electrodes facing each other, that is, to prepare the graphite paper substrate ...

Embodiment 2

[0039] Weigh polyvinylidene fluoride and potassium carbonate according to the ratio of 99% by mass: 1%, mix the weighed raw materials evenly, and fully dissolve the uniformly mixed raw materials into a mixed solution with NMP solvent to form a sol; then Apply the mixed sol evenly on the aluminum foil substrate, and after drying in a constant temperature drying oven, a layer of composite film will be formed on the aluminum foil; the composite film is heat-treated at 250°C for 1 minute, and the heat-treated composite film is placed in the Soak in potassium hydroxide solution for 600 minutes, take it out, and then activate the soaked composite film at 250 ° C for 1 minute, so that the electrode material of flexible supercapacitor with polyvinylidene fluoride composite film is prepared; The mixed solution of polyvinyl alcohol and potassium hydroxide electrolyte is used as the adhesive to bond the two electrodes facing each other, that is, the aluminum foil substrate carrying the fi...

Embodiment 3

[0041] Weigh polyvinylidene fluoride and potassium carbonate according to the ratio of 50% by mass: 50%, mix the weighed raw materials evenly, fully dissolve the uniformly mixed raw materials into a mixed solution with DMSO solvent, and form a sol; then Apply the mixed sol evenly on the nickel foam substrate, and after drying in a constant temperature drying oven, a layer of composite film will be formed on the foam nickel; heat treat the composite film at 80°C for 120 minutes, and heat Soak the film in potassium hydroxide solution for 600 minutes, take it out, and then activate the soaked composite film at 80°C for 120 minutes, thus preparing the electrode material of the flexible supercapacitor with polyvinylidene fluoride composite film ; Then use the mixed solution of polyvinyl alcohol and potassium hydroxide electrolyte as an adhesive to bond the two electrodes facing each other, that is, it is prepared to use the foamed nickel substrate of the bearing film as the current ...

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Abstract

The invention relates to an electrode material of a super-capacitor and a preparation method of the electrode material as well as a super-capacitor manufactured by the electrode material. The electrode material comprises the following components in percentage by weight: 50-99% of polyvinylidene fluoride groups and 1-50% of additives. The preparation method comprises the following steps of: mixing the polyvinylidene fluoride groups with the additives in percentage by weight and dissolving the obtained mixture by using an organic solvent; coating and drying the dissolved solution on a carrier film substrate to obtain a composite film; activating the composite film by a physiochemical process to obtain an electrode material made from the polyvinylidene fluoride groups; and preparing the obtain electrode material into a flexible super-capacitor. The electrode material prepared from the polyvinylidene fluoride groups without adding active substances, low in cost and fast in charge-discharge speed; the flexible super-capacitor manufactured by the electrode material is good in charge-discharge performance and long in cycle life; and the flexible super-capacitor can be bent and folded, and is 200 mu m in the thinnest thickness, thus meeting a miniaturization development trend of a device and expanding an application scope of the super-capacitor.

Description

technical field [0001] The invention relates to a supercapacitor electrode material and a preparation method thereof, in particular to a supercapacitor electrode material and a preparation method and a supercapacitor produced therefrom, belonging to the technical field of energy storage devices. Background technique [0002] Supercapacitor, also known as electrochemical capacitor, has high power density, fast charging and discharging speed, long cycle life and good stability, and can be used as a new type of electrical energy storage component. The currently used electrical energy storage components are mainly batteries, but batteries have disadvantages such as low power density, short service life, and large volume, which greatly limit their application fields. Supercapacitors can make up for this defect. With the rapid development of large-scale integrated circuits, high-speed, large-capacity computer technology, and communication technology in the fields of microelectroni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042H01G9/15
CPCY02E60/13
Inventor 朱基亮孙平汪忠兴曾子繁
Owner SICHUAN UNIV
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