Tubular cobalt-hybridized g-C3N4 material, microwave synthesis method thereof and application of tubular cobalt-hybridized g-C3N4 material in field of supercapacitors

A microwave synthesis, g-c3n4 technology, applied in hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, nitrogen and non-metallic compounds, etc., can solve the problems of limited application, microwave insensitivity, etc. Simple, good crystallization results

Pending Publication Date: 2022-04-01
XUZHOU UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the application in the preparation of g-C 3 N 4 The precursors of materials (such as melamine, dicyandiamide, urea, thiourea, etc.) are not sensitive to microwaves, which severely limits the microwave method in g-C 3 N 4 Applications in preparation

Method used

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  • Tubular cobalt-hybridized g-C3N4 material, microwave synthesis method thereof and application of tubular cobalt-hybridized g-C3N4 material in field of supercapacitors
  • Tubular cobalt-hybridized g-C3N4 material, microwave synthesis method thereof and application of tubular cobalt-hybridized g-C3N4 material in field of supercapacitors
  • Tubular cobalt-hybridized g-C3N4 material, microwave synthesis method thereof and application of tubular cobalt-hybridized g-C3N4 material in field of supercapacitors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, a tubular cobalt hybrid g-C 3 N 4 The microwave synthesis method of material comprises the following steps:

[0039] S1. Dissolve 8g of melamine and 8g of cyanuric acid powder in 400ml of deionized water, respectively, and heat them in a water bath to 80°C to form a saturated solution. Mix the above-mentioned saturated melamine clear solution with the saturated cyanuric acid clear solution to form a loose structure The melamine-cyanuric acid supramolecular aggregate;

[0040] S2. After the melamine-cyanuric acid supramolecular aggregates are centrifugally cleaned, they are redispersed in 400ml aqueous solution to form a 450ml mixed solution, and the mixed solution is divided into 6 parts of 75ml mixed solution, and these 6 parts of 75ml mixed solution The solution was transferred to six 100ml polytetrafluoroethylene reaction kettles, and was subjected to hydrothermal reaction in an oven at 150°C for 12 hours for recrystallization treatment;...

Embodiment 2

[0048] Such as figure 1 As shown, a tubular cobalt hybrid g-C 3 N 4 The microwave synthesis method of material comprises the following steps:

[0049] S1. Dissolve 8g of melamine and 8g of cyanuric acid powder in 400ml of deionized water, respectively, and heat them in a water bath to 80°C to form a saturated solution. Mix the above-mentioned saturated melamine clear solution with the saturated cyanuric acid clear solution to form a loose structure The melamine-cyanuric acid supramolecular aggregate;

[0050] S2. After the melamine-cyanuric acid supramolecular aggregates are centrifugally cleaned, they are redispersed in 400ml aqueous solution to form a 450ml mixed solution, and the mixed solution is divided into 6 parts of 75ml mixed solution, and these 6 parts of 75ml mixed solution The solution was transferred to six 100ml polytetrafluoroethylene reaction kettles, and recrystallized in a 150°C oven for 9 hours; after the reaction was completed, it was centrifuged and fre...

Embodiment 3

[0055] Such as figure 1 As shown, a tubular cobalt hybrid g-C 3 N 4 The microwave synthesis method of material comprises the following steps:

[0056] S1. Dissolve 8g of melamine and 8g of cyanuric acid powder in 400ml of deionized water, respectively, and heat them in a water bath to 80°C to form a saturated solution. Mix the above-mentioned saturated melamine clear solution with the saturated cyanuric acid clear solution to form a loose structure The melamine-cyanuric acid supramolecular aggregate;

[0057] S2. After the melamine-cyanuric acid supramolecular aggregates are centrifugally cleaned, they are redispersed in 400ml aqueous solution to form a 450ml mixed solution, and the mixed solution is divided into 6 parts of 75ml mixed solution, and these 6 parts of 75ml mixed solution The solution was transferred to six 100ml polytetrafluoroethylene reaction kettles, and recrystallized in a 120°C oven for 12 hours. After the reaction was completed, it was centrifuged and fr...

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Abstract

The invention discloses a tubular cobalt-hybridized g-C3N4 material, a microwave synthesis method thereof and application of the tubular cobalt-hybridized g-C3N4 material in the field of supercapacitors. The microwave synthesis method comprises the following steps: firstly, preparing a melamine-cyanuric acid supramolecular aggregate from a saturated melamine solution and a saturated cyanuric acid solution; the preparation method comprises the following steps: firstly preparing a rod-like melamine-cyanuric acid supramolecular precursor, then performing hydrothermal recrystallization to obtain the rod-like melamine-cyanuric acid supramolecular precursor, then coating the surface of the rod-like melamine-cyanuric acid supramolecular precursor with a layer of two-dimensional cobalt-based MOF material, and finally rapidly synthesizing the tubular cobalt-hybridized g-C3N4 material through a microwave method. The material has a relatively large specific surface area and relatively high capacitive performance, shows good charge-discharge performance, and has a good application prospect in the field of supercapacitors. The method has the advantages of simple steps, convenient operation, greatly reduced preparation energy consumption and synthesis time, energy saving and environmental protection, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of preparation and application of energy storage materials, in particular to a tubular cobalt hybrid g-C 3 N 4 Materials and their microwave synthesis methods and their applications in the field of supercapacitors. Background technique [0002] Carbon materials have the advantages of good electrical conductivity and stable chemical properties, and have been widely studied in the field of supercapacitors. At present, a large number of research reports have confirmed that the doping of heteroatoms (O, B, N, P, S, etc.) can effectively improve the capacitance performance of carbon materials. Among them, the effect of N atom doping is more significant, while graphitic carbon nitride (g-C 3 N 4 ) as a carbon material with high nitrogen content has great application prospects in the field of energy storage, and is different from traditional N-atom-doped carbon materials, g-C 3 N 4 The raw materials are abund...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/082C01G51/04B01J19/12H01G11/86H01G11/26H01G11/30
Inventor 刘园园王鹏罗丛丛么冰宋明李靖堵锡华
Owner XUZHOU UNIV OF TECH
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