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A kind of three-dimensional composite carbon material, its preparation method and electrode

A three-dimensional composite, carbon material technology, applied in the field of electrodes, can solve the problems of application limitation, poor chemical reversibility, high cost, etc., and achieve the effect of increasing pseudocapacitance effect, increasing specific surface area, good capacitance performance and cycle stability

Active Publication Date: 2018-03-20
未名电池科技(深圳)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Transition metal oxides and conductive polymers have high specific capacitance, however, their applications are severely limited due to high cost, poor chemical reversibility, and lack of cycling stability in electrolyte solutions.

Method used

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  • A kind of three-dimensional composite carbon material, its preparation method and electrode
  • A kind of three-dimensional composite carbon material, its preparation method and electrode
  • A kind of three-dimensional composite carbon material, its preparation method and electrode

Examples

Experimental program
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Embodiment

[0028] The test materials of this example include: aniline (ANI, Beijing Chemical Reagent Company, analytically pure), vacuum distillation before use; ammonium persulfate (APS, Sinopharm Chemical Reagent Co., Ltd., analytically pure); graphite (Graphite, Alpha love Shasha Chemical Co., Ltd., 325 mesh, purity ≥ 99.5%), other reagents are of analytical grade, without treatment before use.

[0029] The graphene oxide in this example adopts the method of modified Hummers chemical exfoliation. The preparation method of the three-dimensional composite carbon material comprises: adding 100 mg of graphene oxide into 50 ml of 1M perchloric acid aqueous solution, and ultrasonicating for 30 minutes to obtain a completely stripped brown-yellow aqueous solution. Then add 1mmol of aniline monomer and continue ultrasonication for 30min to obtain a uniform aqueous solution, then add 1M perchloric acid aqueous solution containing ammonium persulfate to the aqueous solution with aniline monomer...

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Abstract

The present application discloses a method for preparing a three-dimensional composite carbon material, which includes utilizing the interaction between oxygen-containing functional groups on the surface of graphene oxide and cations of conductive organic polymer precursors to form polymerized conductive organic compounds on the surface of graphene oxide. The polymer nanorod array is then reduced to graphene oxide, followed by high-temperature carbonization to obtain a three-dimensional composite carbon material of graphene composite porous carbon nanorod array. The preparation method of the present application polymerizes the conductive polymer nanorod array on the surface of graphene oxide, and finally forms a three-dimensional composite carbon material of graphene composite porous carbon nanorod array, which effectively increases the specific surface area of ​​the composite carbon material and is used as an electrode. , it can increase the unit capacity of the electrode, has good capacitance performance and cycle stability, and can well meet the requirements of supercapacitors.

Description

technical field [0001] The present application relates to the field of electrode materials, in particular to a three-dimensional composite carbon material, a preparation method thereof, and an electrode prepared by using the three-dimensional composite carbon material. Background technique [0002] Since graphene was first prepared in 2004 by Andre Geim and Kostya Novoselov, physicists at the University of Manchester, UK, graphene has attracted widespread attention from scientists all over the world. Graphene is a pure carbon atom with only one atomic thickness sp 2 Substances that combine to form a dense honeycomb lattice structure. Due to its unique two-dimensional sheet-like carbon nanostructure, it has excellent physical properties, chemical and thermal properties, high electrical conductivity, and very high mechanical strength, which makes graphene-based materials widely used in various industries. Has a wide range of applications. Especially with the continuous impr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/36H01G11/38H01G11/86
Inventor 范浩森潘锋
Owner 未名电池科技(深圳)有限公司