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Controllable preparation method of biomass gel-based hierarchical pore ordered three-dimensional network structure carbon material

A network structure and biomass technology, which is applied in the field of controllable preparation of biomass gel-based multi-level porous ordered three-dimensional network structure carbon materials, can solve the problem of reducing the order and integrity of the pore structure and the easy collapse of the three-dimensional nanostructure , pore blockage and other problems, achieving good application prospects, excellent electrochemical performance, and stable structure

Active Publication Date: 2020-05-05
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The raw materials such as phenols and aldehydes used to prepare carbon aerogels are toxic and corrosive. In addition, the three-dimensional nanostructure of the original resin gel is easy to collapse during the preparation process of phenolic resin carbon gels, causing channel blockage and reducing the stability of the channel structure. order and completeness

Method used

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  • Controllable preparation method of biomass gel-based hierarchical pore ordered three-dimensional network structure carbon material
  • Controllable preparation method of biomass gel-based hierarchical pore ordered three-dimensional network structure carbon material
  • Controllable preparation method of biomass gel-based hierarchical pore ordered three-dimensional network structure carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Add 4.0g of acrylamide, 0.466g of aniline, 100μL of acrylic acid, 1.0g of polyvinylpyrrolidone, 272μL of N,N'-methylenebisacrylamide and 2-hydroxy-4'-(2-hydroxyethoxy) - Add 0.265g of 2-methylpropiophenone into 14mL of pure water, and keep stirring to form a uniform solution A;

[0033] (2) Add 5.935g of soluble starch to 20mL of pure water, heat to 75°C under constant stirring until a uniform and transparent solution B is formed, and cool naturally to room temperature for use;

[0034] (3) Add solution A to solution B, form a transparent mixed solution under magnetic stirring, pass through nitrogen for 15 minutes, irradiate with ultraviolet light until polyacrylamide gel is formed, and then dry at low temperature to form polyacrylamide gel / starch double web gel;

[0035] (4) Immerse the polyacrylamide gel / starch xerogel in the hydrochloric acid solution containing ammonium persulfate, and oxidize it at 4°C for 12h to obtain the polyacrylamide gel / starch / polyanilin...

Embodiment 2

[0039] (1) Add 4.0g of acrylamide, 0.466g of aniline, 100μL of acrylic acid, 1.0g of polyvinylpyrrolidone, 272μL of N,N'-methylenebisacrylamide and 2-hydroxy-4'-(2-hydroxyethoxy) - Add 0.265g of 2-methylpropiophenone into 14mL of pure water, and keep stirring to form a uniform solution A;

[0040] (2) Add 5.935g of soluble starch to 20mL of pure water, heat to 75°C under constant stirring until a uniform and transparent solution B is formed, and cool naturally to room temperature for use;

[0041] (3) Add solution A to solution B, form a transparent mixed solution under magnetic stirring, pass through nitrogen for 15 minutes, irradiate with ultraviolet light until polyacrylamide gel is formed, and then dry at low temperature to form polyacrylamide gel / starch double web gel;

[0042] (4) Immerse the polyacrylamide gel / starch xerogel in the hydrochloric acid solution containing ammonium persulfate, and oxidize it at 4°C for 12h to obtain the polyacrylamide gel / starch / polyanilin...

Embodiment 3

[0047] (1) Add 4.0g of acrylamide, 0.466g of aniline, 100μL of acrylic acid, 1.0g of polyvinylpyrrolidone, 272μL of N,N'-methylenebisacrylamide and 2-hydroxy-4'-(2-hydroxyethoxy) - Add 0.265g of 2-methylpropiophenone into 14mL of pure water, and keep stirring to form a uniform solution A;

[0048] (2) Add 5.935g of soluble starch to 20mL of pure water, heat to 75°C under constant stirring until a uniform and transparent solution B is formed, and cool naturally to room temperature for use;

[0049] (3) Add solution A to solution B, form a transparent mixed solution under magnetic stirring, pass through nitrogen for 15 minutes, irradiate with ultraviolet light until polyacrylamide gel is formed, and then dry at low temperature to form polyacrylamide gel / starch double web gel;

[0050] (4) Immerse the polyacrylamide gel / starch xerogel in the hydrochloric acid solution containing ammonium persulfate, and oxidize it at 4°C for 12h to obtain the polyacrylamide gel / starch / polyanilin...

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Abstract

The invention discloses a controllable preparation method of a biomass gel-based hierarchical pore ordered three-dimensional network structure carbon material. The preparation method comprises the following steps: preparing polyacrylamide / starch / polyaniline three-network gel from acrylamide, aniline, polyvinylpyrrolidone, N, N '-methylene bisacrylamide, 2-hydroxy-4'-(2-hydroxyethyl)-2-methyl propiophenone, soluble starch and the like; carrying out constant-temperature pyrolysis treatment in a tubular furnace at 700 DEG C to obtain carbon gel; mixing the carbon gel with solid KOH, adding waterfor soaking, and drying to obtain a carbon gel / KOH mixture; activating for 2 hours under the protection of inert gas at the temperature of 600-800 DEG C to obtain a crude product; and putting the crude product into a hydrochloric acid solution for soaking, and drying to obtain the hierarchical pore ordered three-dimensional network structure carbon supercapacitor electrode material. The series supercapacitor electrode material prepared by the invention is a nitrogen-oxygen co-doped advanced carbon material with hierarchical pores and a three-dimensional nanostructure, and shows excellent electrochemical performance when being used for supercapacitors.

Description

technical field [0001] The invention belongs to the technical field of preparation of supercapacitor electrode materials, and in particular relates to a controllable preparation method of a biomass gel-based multi-level porous ordered three-dimensional network structure carbon material. Background technique [0002] Electrochemical storage and conversion devices are an important part of new energy technology, which can efficiently store the energy generated by wind energy, photovoltaic and biomass power generation for subsequent applications, and solve the problem of continuous, stable and efficient operation of new energy storage networks. As a new type of electrochemical storage and conversion device, supercapacitors are recognized as having great application prospects in the field of energy storage and conversion because of their high power density, long life, and fast charge-discharge performance. Widespread attention from the business community. At present, most commer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/318C01B32/348H01G11/24H01G11/44H01G11/86
CPCC01B32/318C01B32/348H01G11/24H01G11/44H01G11/86Y02E60/13
Inventor 魏献军代冬梅魏济时
Owner HENAN NORMAL UNIV
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