Tin oxynitride nanocolumn array/porous activated carbon fiber integrated material and its preparation method and electrochemical energy storage application

A technology of activated carbon fiber and nano-column array, which is applied in the direction of nanotechnology, nanotechnology, hybrid/electric double layer capacitor manufacturing, etc., can solve the problems of limited modification effect and single means, and achieve enhanced energy storage effect and good water solubility , Improve the effect of cycle stability performance

Active Publication Date: 2021-01-26
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the vast majority of modifications have shortcomings such as single means and limited modification effects.

Method used

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  • Tin oxynitride nanocolumn array/porous activated carbon fiber integrated material and its preparation method and electrochemical energy storage application
  • Tin oxynitride nanocolumn array/porous activated carbon fiber integrated material and its preparation method and electrochemical energy storage application
  • Tin oxynitride nanocolumn array/porous activated carbon fiber integrated material and its preparation method and electrochemical energy storage application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]The microstructure schematic diagram of the tin oxynitride nano-pillar array / porous activated carbon fiber integrated material of the present invention, please refer to the instructions attachedfigure 1 . As shown in the figure, in the tin oxynitride nano-pillar array / porous activated carbon fiber integrated material, the porous activated carbon fiber 1 has evenly distributed nanopores on the surface, and the pore diameter ranges from 20 to 50 nm. The ordered array of tin oxynitride nanopillars 2 grow uniformly and vertically in the nanopores on the surface of the porous activated carbon fiber, and grow independently of each other without any agglomeration, presenting an ordered array structure separated by intervals, tin oxynitride nanopillars The long range is 15-20nm.

Embodiment 2

[0038]The preparation process flow chart of the tin oxynitride nano-pillar array / activated carbon fiber integrated material of the present invention is detailed in the instructions attachedfigure 2 , Where (1) is pure carbon fiber, (2) porous activated carbon fiber, (3) tin dioxide nano column array / porous activated carbon fiber, (4) tin oxynitride nano column array / porous activated carbon fiber; A) is the activation reaction of the carbon fiber, after the reaction, the porous activated carbon fiber is prepared; (B) is the seed-assisted hydrothermal synthesis method to obtain the tin dioxide nano-pillar array / porous activated carbon fiber integrated material; (C) is the procedural The heating ammonia thermal nitriding method finally obtains the tin oxynitride nano column array / porous activated carbon fiber integrated material. The specific preparation steps of the tin oxynitride nano-pillar array / porous activated carbon fiber integrated material are as follows:

[0039](1) Synthesis of...

Embodiment 3

[0044]The present invention carries out morphology and structure characterization of the tin oxynitride nano-pillar array / porous activated carbon fiber integrated material. For details, see the appendix of the instruction.image 3 , Attachedimage 3 A and B are scanning electron microscope images of carbon fiber and porous activated carbon fiber respectively; C and D are electron microscope images of tin dioxide nanopillar array / porous activated carbon fiber under different magnifications; E and F are tin oxynitride Electron micrographs of nanopillar arrays / hole-like activated carbon fibers at different magnifications. Figures A and B show that after high temperature argon, carbon dioxide activation and concentrated nitric acid hydrothermal activation are combined, the roughness of the carbon fiber surface is significantly increased, and the activated carbon fiber has evenly distributed nanopores. Figures C and D show that the array of tin dioxide nanopillars grows vertically on the s...

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PUM

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Abstract

The invention discloses a tin oxynitride nanocolumn array / porous activated carbon fiber integrated material and a preparation method and an electrochemical energy storage application thereof. The material comprises porous activated carbon fibers and tin oxynitride nanocolumns. The porous activated carbon fibers have nanoporous structures on the surfaces. The tin oxynitride nanocolumns grow vertically on the surfaces of the porous carbon fibers and are distributed in an array. The porous activated carbon fibers and the tin oxynitride nanocolums are closely connected into an integrated structurethrough tin-nitrogen-carbon and tin-oxygen-carbon chemical bonds, so as to form a tin oxynitride nanocolumn array / porous activated carbon fiber integrated material. The material can be applied to super capacitor electrodes to construct energy storage devices so as to realize electrochemical energy storage application. The integrated material has the characteristics of high conductivity and largeeffective specific surface area, can shorten the ion diffusion path, and has high specific capacitance and good cyclic stability.

Description

Technical field[0001]The invention relates to a tin oxynitride nano column array / porous activated carbon fiber integrated material, a preparation method thereof, and an electrochemical energy storage application of a super capacitor, and belongs to the technical field of electrochemical energy storage materials.Background technique[0002]Energy crisis and environmental pollution are two important issues in the world today. This is not only because the main energy source, fossil fuels, will be exhausted in the near future, but also because fossil fuels release a large amount of carbon dioxide and soot during use, which pollute the environment. . Therefore, people have high expectations for using renewable energy to replace traditional fuels as the main energy source in our daily lives. However, some renewable energy sources, such as solar and wind energy, are unstable and intermittent, which means that energy storage plays an important role in a sustainable energy output system. Vario...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/26H01G11/30H01G11/40H01G11/86B82Y30/00
CPCB82Y30/00H01G11/26H01G11/30H01G11/40H01G11/86Y02E60/13
Inventor 谢一兵徐晶
Owner SOUTHEAST UNIV
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