Preparation method of graphene-based supercapacitor electrode material
A technology of supercapacitor electrodes and graphite electrodes, which is applied in the field of composite materials, can solve problems such as high preparation costs and complicated preparation methods, and achieve the effects of reducing preparation costs, simple operation, and increasing energy density
Active Publication Date: 2018-06-29
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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[0004] The existing graphene-based supercapacitor electrode materials are usually metal-graphene composite materials, the preparation method of which is complicated to operate, and the preparation needs to use metal foil as the electronic current collector, so the preparation cost is relatively high
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[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] The invention provides a preparation method of a graphene-based supercapacitor electrode material, such as figure 1 As shown, the method includes:
[0022] placing graphite foil on the surface of the first graphite electrode;
[0023] placing an organic porous material containing an electrolyte solution on the surface of the graphite...
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The invention provides a preparation method of a graphene-based supercapacitor electrode material. The method comprises: placing a graphite foil on the surface of a first graphite electrode; placing an organic porous material containing an electrolyte solution on the surface of the graphite foil; placing a second graphite electrode on the surface of the organic porous material containing an electrolyte solution; The first graphite electrode is connected to the positive pole of the DC power supply, the second graphite electrode is connected to the negative pole of the DC power supply, and maintained for a period of time to reach the graphene of the predetermined depth; the graphite having the predetermined depth The graphene graphite foil was washed with water and dried to obtain a graphene-based supercapacitor electrode material. The preparation method of the invention is simple to operate, and can effectively increase the energy density of the supercapacitor and reduce the preparation cost of the supercapacitor.
Description
technical field [0001] The invention relates to the technical field of composite materials, in particular to a method for preparing a graphene-based supercapacitor electrode material. Background technique [0002] Graphene is a new carbonaceous material. At present, conventional graphene preparation methods include chemical vapor deposition, epitaxial growth, redox and electrochemical exfoliation. Among them, the electrochemical exfoliation has the advantages of high efficiency and environmental protection, and the Quickly be promoted and applied. Due to its extremely high specific surface area, graphene has been applied to the preparation of supercapacitors soon after its advent, and this graphene-based supercapacitor electrode material is usually a metal-graphene composite material, such as an aluminum-graphene composite material , the preparation method is to apply or spray the graphene colloidal suspension on the surface of the electronic current collector (such as alum...
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IPC IPC(8): H01G11/32H01G11/86
CPCY02E60/13
Inventor 张大勇金智史敬元彭松昂
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI