Preparation method of fiber/graphene/copper sulfide flexible electrode material

Abstract

The invention discloses a preparation method of a fiber / graphene / copper sulfide flexible electrode material. The preparation method is characterized by comprising the following steps: A, soaking pretreated fiber fabric into an oxidized graphene suspension and drying, and repeating the step several times to obtain a fiber / oxidized graphene material, wherein the oxidized graphene suspension is obtained by dispersing oxidized graphene powder into deionized water ultrasonically; B, carrying out in-situ reduction on the fiber / oxidized graphene material to obtain a fiber / graphene material; and C, soaking the fiber / graphene material obtained in the step B into a hydrothermal reactor containing copper salt and a sulfur-containing precursor solution, and carrying out heating reaction synthesis to obtain the fiber / graphene / copper sulfide flexible electrode material. According to the material obtained by the method, a carbon material with high electrical conductivity is compounded with copper sulfide with high specific capacitance and low electrical conductivity, so that the advantages of the carbon material and copper sulfide are fully developed. The material has relatively high area specific capacitance and power characteristic, and is excellent in cycle performance.

Description

technical field

[0001] The invention relates to a preparation method of a flexible electrode material, in particular to a preparation method of a fiber / graphene / copper sulfide flexible electrode material. Background technique

[0002] Electrochemical capacitors are widely used in fields such as hybrid electric vehicles, communications, national defense, and wearable electronics based on their special features such as high capacity and high power density. As today's electronic devices are becoming thinner and more flexible, portable and wearable electronic devices such as flexible displays, distributed sensors, electronic paper and wearable multimedia devices are increasingly entering people's daily lives. However, traditional electrochemical capacitors are bulky, heavy, and have a fixed shape, which is far from meeting the development requirements of current flexible electronic devices. There is an urgent need to develop flexible electrochemical capacitors and their electro...