Preparation method for graphene membrane electrode material of supercapacitor

A supercapacitor and graphene film technology, applied in the field of preparation, can solve the problems of increasing the quality and volume of supercapacitors, low bulk density, general performance, etc., and achieve the effects of improving cycle stability, low reaction temperature, and improving capacitance performance
CN107337199AInactive Publication Date: 2017-11-10SHANXI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANXI UNIV
Publication Date
2017-11-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a preparation method for a graphene membrane electrode material of a supercapacitor. The preparation method comprises the following steps: thoroughly soaking a graphene oxide membrane or reduced graphene oxide membrane in a polytetrafluoroethylene reaction vessel filled with concentrated sulfuric acid; carrying out a reaction at 120 to 180 DEG C for 3 to 24 h; and then carrying out cooling at room temperature, washing with distilled water and drying so as to prepare the graphene membrane electrode material. A supercapacitor assembled from the graphene membrane electrode material has good capacitive performance, especially superior cycle stability. The preparation method provided by the invention is convenient to operate. The prepared graphene membrane electrode material is applicable as an electrode material to symmetric or asymmetric supercapacitors.
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Description

technical field

[0001] The invention relates to the preparation of a membrane electrode material, in particular to a preparation method of a graphene membrane electrode material that can be used for a supercapacitor. Background technique

[0002] As a new energy storage device between batteries and traditional capacitors, supercapacitors have the characteristics of high energy density of batteries, high power density of traditional capacitors, and simple structure. They have potential application value in new clean energy and other fields. In recent years, consumer electronics products are developing in the direction of miniaturization, flexibility and foldability, which has stimulated people's research interest in high-volume performance supercapacitors that can be used in miniaturized electronic devices. The development of supercapacitors with high power density and high energy density meets the Maximizing the use of electronic devices with limited volume and mass has beco...

Claims

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