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Preparation technology of nitrogen-doped mesoporous carbon composite metal oxide electrode material for supercapacitor

A nitrogen-doped mesoporous carbon, supercapacitor technology, used in hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, etc., can solve the problems of poor stability, low energy density and power density, weak electrical conductivity, etc. Clear, product size controllable, easy to operate

Active Publication Date: 2018-11-23
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its electrical conductivity is weak, energy density and power density are low and stability is poor

Method used

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  • Preparation technology of nitrogen-doped mesoporous carbon composite metal oxide electrode material for supercapacitor
  • Preparation technology of nitrogen-doped mesoporous carbon composite metal oxide electrode material for supercapacitor
  • Preparation technology of nitrogen-doped mesoporous carbon composite metal oxide electrode material for supercapacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Preparation of SBA-15: Add concentrated hydrochloric acid and deionized water to P123, magnetically stir for 4 hours under temperature control at 40 °C, add tetraethyl orthosilicate and mix well, concentrated hydrochloric acid: deionized water: P123: positive The mass ratio of ethyl silicate was 1: 0.2:0.025: 0.07-0.09, the temperature was controlled at 100 °C for hydrothermal reaction for 24 h, after suction filtration, washing, drying and calcination at 500 °C for 6 h, the white powder SBA- 15;

[0057] (2) Preparation of precursor nitrogen-doped ordered mesoporous carbon:

[0058] a. Add sugar, concentrated sulfuric acid, and water to the SBA-15 obtained in step (1), and ultrasonically pre-mix for 20 minutes;

[0059] b. Add the mixed solution of urea and hexamethylenetetramine, ultrasonically mix and heat;

[0060] C, add these four kinds of substances of the mixed solution of sucrose, concentrated sulfuric acid, water, urea and hexamethylenetetramine successi...

Embodiment 2

[0069] (1) Preparation of SBA-15: Add concentrated hydrochloric acid and deionized water to P123, magnetically stir for 4 hours under temperature control at 40 °C, add tetraethyl orthosilicate and mix well, concentrated hydrochloric acid: deionized water: P123: positive The mass ratio of ethyl silicate was 1: 0.2: 0.025:0.07-0.09, the temperature was controlled at 100 °C for hydrothermal reaction for 24 h, after suction filtration, washing, drying and calcination at high temperature 500 °C for 6 h, the white powder SBA- 15;

[0070] (2) Preparation of precursor nitrogen-doped ordered mesoporous carbon:

[0071] a. Add sugar, concentrated sulfuric acid, and water to the SBA-15 obtained in step (1), and ultrasonically pre-mix for 25 minutes;

[0072] b. Add the mixed solution of urea and hexamethylenetetramine, ultrasonically mix and heat;

[0073] C, add these four kinds of substances of the mixed solution of sucrose, concentrated sulfuric acid, water, urea and hexamethylenet...

Embodiment 3

[0080] (1) Preparation of SBA-15: Add concentrated hydrochloric acid and deionized water to P123, magnetically stir for 4 hours under temperature control at 40 °C, add tetraethyl orthosilicate and mix well, concentrated hydrochloric acid: deionized water: P123: positive The mass ratio of ethyl silicate was 1: 0.2: 0.025:0.07-0.09, the temperature was controlled at 100 °C for hydrothermal reaction for 24 h, after suction filtration, washing, drying and calcination at high temperature 500 °C for 6 h, the white powder SBA- 15;

[0081] (2) Preparation of precursor nitrogen-doped ordered mesoporous carbon:

[0082] a. Add sugar, concentrated sulfuric acid, and water to the SBA-15 obtained in step (1), and ultrasonically pre-mix for 30 minutes;

[0083] b. Add the mixed solution of urea and hexamethylenetetramine, ultrasonically mix and heat;

[0084] C, add these four kinds of substances of the mixed solution of sucrose, concentrated sulfuric acid, water, urea and hexamethylenet...

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Abstract

The invention discloses a preparation technology of a nitrogen-doped mesoporous carbon composite metal oxide electrode material for a supercapacitor, wherein the preparation method comprises the following steps of firstly, taking a mesoporous molecular sieve SBA-15 as a template agent, taking carbohydrate as a carbon source, and taking urea and hexamethylenetetramine as a nitrogen sources, performing calcining by inert gas, and removing the template agent to obtain nitrogen-doped mesoporous carbon; then, adding a metal salt solution, introducing inert gas for calcining to obtain a nitrogen-doped mesoporous carbon composite metal oxide composite material; and then mixing the material with polytetrafluoroethylene (PTFE) ) and the carbon black and then performing coating, pressing and dryingto obtain the nitrogen-doped mesoporous carbon composite metal oxide electrode material for the supercapacitor. The preparation method disclosed by the invention is low in cost and simple and convenient to operate. The nitrogen-doped mesoporous carbon prepared by the method disclosed by the invention is clear in pore passage and appropriate in pore size, the specific surface area is large, the distribution of the transition metal oxide nano particles is uniform, and the loading capacity is large. The electrochemical performance of the nitrogen-doped mesoporous carbon composite metal oxide electrode material is excellent, so that the electrode material has a wide market prospect in the field of energy storage materials such as supercapacitors and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of mesoporous carbon composite materials, and more specifically relates to a nitrogen-doped ordered mesoporous carbon composite metal oxide electrode material for supercapacitors and its preparation technology. Background technique [0002] Carbon materials have the advantages of abundant raw materials, large specific surface area, high temperature resistance, acid and alkali resistance, and good electrical conductivity. Mesoporous carbon materials with pore diameters ranging from 2 to 50 nm, as an important branch of porous carbon materials, are nanostructure materials of metastable carbon crystals, with large specific surface area, uniform pore size distribution, and orderly three-dimensional connection of pores. , Good chemical and thermal stability, can be used to prepare catalyst supports, hydrogen storage materials, adsorption separation and supercapacitor electrode materials, etc. Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/30H01G11/32H01G11/46
CPCH01G11/24H01G11/30H01G11/32H01G11/46H01G11/86Y02E60/13
Inventor 项东朱玉轩王诗涵刘科高孙齐磊
Owner SHANDONG JIANZHU UNIV
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