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Preparation method of hierarchical pore nitrogen-oxygen-doped carbon super capacitor electrode material

A technology for supercapacitors and electrode materials, which is applied in the manufacture of hybrid/electric double-layer capacitors, etc., can solve the problems of difficult structure regulation, difficult removal of template agents, complex synthesis process, etc., and achieves increased conductivity, simple, non-toxic and pollution-free cost. , the effect of improving hydrophilicity

Inactive Publication Date: 2018-04-13
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the commonly used methods for preparing hierarchically porous carbon materials are mainly soft template method and hard template method, but the hard template method faces problems such as long preparation period, complex synthesis process and difficult removal of template agent in the preparation process, while surfactants and The soft template method represented by aggregates has the defect that the structure is difficult to control

Method used

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  • Preparation method of hierarchical pore nitrogen-oxygen-doped carbon super capacitor electrode material
  • Preparation method of hierarchical pore nitrogen-oxygen-doped carbon super capacitor electrode material
  • Preparation method of hierarchical pore nitrogen-oxygen-doped carbon super capacitor electrode material

Examples

Experimental program
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Effect test

Embodiment 1

[0034] (1) Put 18 g of biomass carbon source egg yolk in a reaction vessel and let it stand at room temperature for 12 hours to obtain material A1;

[0035] (2) Transfer material A1 to a porcelain boat and place it in a tube furnace. Under the protection of nitrogen, heat up from room temperature to 300°C for 60 minutes and keep it for 60 minutes, then heat up to 600°C at a heating rate of 5°C / min for carbonization treatment 2h, then naturally cooled to room temperature to obtain material B1;

[0036] (3) Mix 0.5g of material B1 and KOH solid in a reaction vessel at a ratio of 1:4 by mass, then add 5mL of deionized water and fully stir and mix evenly. After standing at room temperature for 12 hours, dry to obtain material C1;

[0037] (4) Transfer material C1 to a nickel boat and place it in a tube furnace. Under the protection of nitrogen, heat up from room temperature to 700 °C for 2 hours at a heating rate of 5 °C / min, and then naturally cool down to room temperature to obt...

Embodiment 2

[0040] (1) Fully mix 18 g of biomass carbon source egg yolk and 1 g of trisodium thiocyanate in a reaction vessel, and let stand at room temperature for 12 hours to obtain material A2;

[0041](2) Transfer material A2 to a porcelain boat and place it in a tube furnace. Under the protection of nitrogen, heat up from room temperature to 300°C for 60 minutes and keep it for 60 minutes, then heat up to 600°C at a heating rate of 5°C / min for carbonization treatment 2h, then naturally cooled to room temperature to obtain material B2;

[0042] (3) Mix 0.5g of material B2 and KOH solid in a reaction vessel at a mass ratio of 1:4, then add 5mL of deionized water and fully stir and mix evenly, let stand at room temperature for 12 hours and then dry to obtain material C2;

[0043] (4) Transfer material C2 to a nickel boat and place it in a tube furnace. Under the protection of nitrogen, heat up from room temperature to 700 °C for 2 hours at a heating rate of 5 °C / min, and then naturally ...

Embodiment 3

[0046] (1) Fully mix 18g of egg yolk as a biomass carbon source and 2g of trisodium thiocyanate in a reaction vessel, and let stand at room temperature for 12 hours to obtain material A3;

[0047] (2) Transfer material A3 to a porcelain boat and place it in a tube furnace. Under the protection of nitrogen, heat up from room temperature to 300°C for 60 minutes and keep it for 60 minutes, then heat up to 600°C at a heating rate of 5°C / min for carbonization treatment 2h, then naturally cooled to room temperature to obtain material B3;

[0048] (3) Mix 0.5g of material B3 and KOH solid in a reaction vessel at a mass ratio of 1:4, then add 5mL of deionized water and stir well to mix evenly, let stand at room temperature for 12 hours and then dry to obtain material C3;

[0049] (4) Transfer material C3 to a nickel boat and place it in a tube furnace. Under the protection of nitrogen, heat up from room temperature to 700 °C for 2 hours at a heating rate of 5 °C / min, and then naturall...

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Abstract

The invention discloses a preparation method of a hierarchical pore nitrogen-oxygen-doped carbon super capacitor electrode material. The method comprises steps of: fully mixing biomass carbon source egg yolk and trithiocyanuric acid trisodium salt in a reaction vessel to obtain a material A; keeping the material A at 300 DEG C for 60 minutes, and rising the temperature to 600-800 DEG C for carrying out carbonization treatment for 2 hours, and performing cooling to room temperature to obtain a material B; mixing the material B and a KOH solid in the reaction vessel, adding deionized water and performing full stirring and uniform mixing, performing standing at room temperature for 12 hours, and performing drying to obtain a material C; heating the material C to 600-800 DEG C for activating treatment for 2 hours, and performing cooling to room temperature to obtain a material D; transferring the material D to the reaction vessel, adding an acidic solution for immersion for 12 hours, performing washing with high-purity water until the pH of a filtrate is neutral, performing drying at 40-90 DEG C for 24 hours to obtain the hierarchical pore nitrogen-oxygen-doped carbon super capacitor electrode material. The hierarchical pore nitrogen-oxygen-doped carbon super capacitor electrode material prepared by the invention has a specific surface area of 3519.5 m2 / g and a total pore volumeof 2.7 cm3 / g, and contains a large number of micropores, mesopores and macropores.

Description

technical field [0001] The invention belongs to the technical field of preparation of supercapacitor electrode materials, and in particular relates to a preparation method of a multilevel porous nitrogen-oxygen-doped carbon supercapacitor electrode material. Background technique [0002] Since ancient times, energy has been an important driving force for national economic development and social progress. As a new type of energy storage device, supercapacitors are becoming more and more popular because of their high safety, high power density, fast charge and discharge performance, and good cycle performance, and the electrode material is a key factor determining the performance of supercapacitors. . Hierarchical porous carbon materials refer to the material structure containing a certain proportion of macropores, mesopores and micropores. Micropores play a necessary role in ion adsorption for the formation of the electric double layer effect. Mesopores shorten the ion tran...

Claims

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Application Information

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IPC IPC(8): H01G11/86
CPCY02E60/13H01G11/86
Inventor 高书燕许鹤魏献军
Owner HENAN NORMAL UNIV
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