Method for preparing RGO/MXene-sulfuric acid supercapacitor flexible electrode with compact structure in one step and application of RGO/MXene-sulfuric acid supercapacitor flexible electrode

A technology of supercapacitors and flexible electrodes, applied in the field of electrochemistry, can solve the problems of low volume energy density of capacitors, reduced energy density of capacitors, poor wettability of electrode materials, etc. Effect
CN110993375AActive Publication Date: 2020-04-10SHANDONG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV OF TECH
Publication Date
2020-04-10

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Abstract

The invention belongs to the field of electrochemistry, and particularly relates to a method for preparing a graphene / MXene-sulfuric acid supercapacitor flexible electrode with a compact structure inone step and an application of the graphene / MXene-sulfuric acid supercapacitor flexible electrode. The preparation method comprises the following steps of mixing a graphene oxide aqueous dispersion with an MXene aqueous dispersion, adding sulfuric acid, and uniformly mixing; and soaking a metal zinc sheet into the uniformly mixed solution, standing to obtain a composite film on the surface of themetal zinc sheet, and stripping to obtain the RGO / MXene-H2SO4 composite film. According to the invention, the RGO / MXene-H2SO4 composite film with an orderly arranged compact structure is prepared by adopting a layer-by-layer assembly method, and the non-volatile liquid electrolyte molecules are synchronously and horizontally distributed on the surface of an electrode material in the self-assemblyprocess of the film, so that the full contact between the electrode material and the electrolyte is realized. The method has the advantages of being simple, high in designability, wide in applicability, good in electrochemical performance and the like, and has the wide application prospects in the fields of electrochemical materials and the like.
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Description

Technical field

[0001] The invention belongs to the field of electrochemistry, and specifically relates to a method for preparing a compact structure RGO / MXene-sulfuric acid supercapacitor flexible electrode in one step and its application. Background technique

[0002] Energy and environmental issues are two major issues that humanity needs to solve urgently. Today, when fossil energy is depleted, environmental pollution is increasingly serious, and global climate is warming, it is particularly urgent to seek renewable green energy to replace traditional fossil energy and to seek harmony between humans and the environment. New types of renewable energy, such as the use of wind and solar energy, the gradual marketization of electric vehicles and hybrid electric vehicles, and the rapid development of various portable electrical devices require efficient, practical, and "green" energy storage and transportation systems. . For new "green" energy storage devices, while paying atten...

Claims

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