Method for preparing graphite paper/ carbon nano tube-graphene/ polyaniline flexible composite electrode

A carbon nanotube and composite electrode technology, which is applied in the fields of hybrid capacitor electrodes and hybrid/electric double layer capacitor manufacturing, etc., can solve the problems of inability to participate in electrochemical energy storage, difficult electrolyte ions, low energy density, etc., and achieve thermal stability. and high chemical stability, excellent electrical conductivity, and the effect of improving specific capacitance

Active Publication Date: 2016-11-30
南京仁厚科技有限公司
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Problems solved by technology

However, high loading often leads to low specific capacity and low energy density, because the thick polyaniline close-packed layer makes it difficult or impossible for electrolyte ions to approach the redox active centers in a relatively fast time, and thus cannot Participate in electrochemical energy storage

Method used

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  • Method for preparing graphite paper/ carbon nano tube-graphene/ polyaniline flexible composite electrode
  • Method for preparing graphite paper/ carbon nano tube-graphene/ polyaniline flexible composite electrode
  • Method for preparing graphite paper/ carbon nano tube-graphene/ polyaniline flexible composite electrode

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specific Embodiment

[0058] Graphite paper is used as an electrode, and is immersed in the highly dispersed graphene and carbon nanotube suspension (made of milk powder) together with the auxiliary electrode, and the distance is kept at 5~15mm. A DC electric field is applied between the two electrodes, and graphene and carbon nanotubes are electrophoretic deposited on the graphite paper electrode. At this time, by electrophoresis, milk powder is wrapped and coated on graphene and carbon nanotubes, and activated carbon-bonded graphite paper / carbon nanotubes-graphene flexible electrodes with a three-dimensional spatial conductive network structure are prepared by vacuum high-temperature carbonization treatment. Graphite paper / carbon nanotube-graphene prepared under different electric field strength, deposition time, milk powder concentration in the suspension, graphene and carbon nanotube composition ratio, carbonization temperature, and holding time were studied. Conductivity tester, specific surfa...

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Abstract

The invention relates to a method for preparing a graphite paper/ carbon nano tube-graphene/ polyaniline flexible composite electrode, and belongs to the technical field of an electrode material. The technical scheme comprises the steps of highly dispersing graphene and carbon nano tubes in milk powder solution, preparing stable suspension liquid, forming the graphene and the carbon nano tubes on the surface of the suspension liquid in a cross stacking mode by employing an electrophoretic deposition method, and wrapping and coating milk powder on the graphene and the carbon nano tubes through electrophoresis; connecting loose nano-powder through vacuum high temperature carbonization processing, and preparing active carbon cross-linked graphite paper/ carbon nano tube-graphene with a three-dimensional space breakover network structure; and obtaining the graphite paper/ carbon nano tube-graphene/ polyaniline electrode by employing microwave-assisted polymerization method. The electrode obtained by the method has high electrochemical property and mechanical property. The polyaniline is controllably and uniformly loaded on the surface of a nano-composite layer. The specific capacitance is further improved. A layered pore structure is solidified in situ, and the flexible thin film with high specific capacity is realized.

Description

technical field [0001] The invention relates to a method for preparing graphite paper / carbon nanotube-graphene / polyaniline flexible composite electrodes, belonging to the technical field of electrode materials. Background technique [0002] As a new type of green energy storage device, supercapacitor has become one of the most potential electrochemical energy storage devices to solve the major problems of energy, resources and environment faced by the world. The world-renowned scientific and technological journal "Exploration" once listed supercapacitors as one of the world's seven major technological discoveries, believing that it is a revolutionary development in the field of energy storage and will replace batteries in some fields. The development of supercapacitors with high energy density, high power density and long life has very broad application prospects in the fields of national defense, aerospace, automobile industry, consumer electronics, electronic communication...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/32H01G11/36H01G11/48H01G11/86
CPCY02E60/13H01G11/30H01G11/32H01G11/36H01G11/48H01G11/86
Inventor 张金辉
Owner 南京仁厚科技有限公司
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