Method for manufacturing graphene composite electrode

A graphene composite, graphene technology, applied in battery electrodes, capacitor electrodes, circuits, etc., can solve the problems of reducing the power density of supercapacitors, increasing the equivalent series resistance of electrodes, and complex electrode sheet processes, and achieving increased cycle stability. performance, reducing the equivalent series resistance, and easy and feasible operation

CN103456508AActive Publication Date: 2013-12-18OCEANS KING LIGHTING SCI&TECH CO LTD +1

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: OCEANS KING LIGHTING SCI&TECH CO LTD
Publication Date: 2013-12-18

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Abstract

The invention relates to the technical field of graphene, and provides a method for manufacturing a graphene composite electrode. The method includes steps of respectively providing poly(3,4-ethylenedioxythiophene), polystyrene sulfonate aqueous solution and aqueous solution dispersion containing graphene and cationic surfactants; immersing current collectors into polyethylenimine aqueous solution to obtain current collectors with surfaces which are subjected to charge processing; immersing the current collectors with the surfaces which are subjected to charge processing into the poly(3,4-ethylenedioxythiophene), the polystyrene sulfonate aqueous solution and aqueous solution dispersion containing the graphene and the cationic surfactants, and then sequentially immersing the current collectors into the poly(3,4-ethylenedioxythiophene), the polystyrene sulfonate aqueous solution and aqueous solution dispersion containing the graphene and the cationic surfactants again to obtain a graphene polymer modified electrode; drying the graphene polymer modified electrode under the vacuum condition at the temperature ranging from 100 DEG C to 180 DEG C to obtain the graphene composite electrode. The method has the advantages that a technology for manufacturing the graphene composite electrode is simple, operation is simple and feasible, and the graphene composite electrode can be easily manufactured on a large scale.

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Description

technical field

[0001] The invention belongs to the technical field of energy storage devices, and in particular relates to a preparation method of a graphene composite electrode. Background technique

[0002] Since Andre K. Geim (Andre K. Geim) of the University of Manchester in the United Kingdom prepared graphene materials in 2004, due to its unique structure and photoelectric properties, it has received widespread attention. Graphene is hailed as a rising "new star" in the field of materials science and condensed matter physics. Its many novel and unique properties and potential applications have attracted many scientific and technological workers. Single-layer graphene has a large specific surface area, excellent electrical and thermal conductivity and low thermal expansion coefficient, such as: 1. High strength, Young's molar weight, (1,100GPa), breaking strength: (125GPa); 2. High thermal conductivity rate, (5,000W / mK); 3. High conductivity, carrier transport rate, (...

Claims

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