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Three-dimensional nitrogen-sulfur-co-doped porous carbon material as well as preparation method and application thereof

A porous carbon material, nitrogen-sulfur co-doping technology, applied in the direction of carbon preparation/purification, hybrid/electric double layer capacitor manufacturing, hybrid capacitor electrodes, etc. Problems such as cumbersome reaction steps, to achieve good application prospects and industrialization potential, huge application potential and industrial value, and simple preparation process

Active Publication Date: 2018-03-06
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reaction steps of this method are loaded down with trivial details, be difficult to industrialized production
[0006] As mentioned above, the prior art discloses a variety of methods for preparing new materials using heteroatom precursors, and thus obtains a variety of new materials with excellent electrical properties, but these new materials have Porosity, high specific surface area and other properties, but in terms of electrical properties, there are still defects such as high current charge and discharge, low energy density, etc., which seriously limits its practical application and industrial production

Method used

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  • Three-dimensional nitrogen-sulfur-co-doped porous carbon material as well as preparation method and application thereof
  • Three-dimensional nitrogen-sulfur-co-doped porous carbon material as well as preparation method and application thereof
  • Three-dimensional nitrogen-sulfur-co-doped porous carbon material as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] S1: React 28ml of pyridine, 2ml of hexachlorobutadiene and 1g of thiocyanuric acid in a polytetrafluoroethylene-lined autoclave at 200°C and 2MPa for 4 hours, wherein pyridine, hexachlorobutadiene The mass ratio of alkene and thiocyanuric acid is 24:3:1.

[0040] S2: Release the pressure to normal pressure, remove excess solvent from the reaction, and obtain sample A.

[0041] S3: Mix 1 g of the obtained sample with 6 g of thiourea;

[0042] S4: Put the sample under inert gas N 2 A high-temperature treatment at 1000° C. for 2 hours was carried out under protection to obtain a sample B; S5: the obtained sample B was ball-milled for 15 minutes to obtain the three-dimensional sheet-like nitrogen-sulfur co-doped porous carbon material. Name it C1.

Embodiment 2-4

[0043] Embodiment 2-4: the investigation of reaction raw material in the step S1

[0044] Except that no thiocyanuric acid was added in step S1 and step S5 was not carried out, other operations were unchanged, so that embodiment 2 was carried out sequentially, named as C2. Except that step S3 and step S5 were not carried out, other operations were unchanged, so that embodiment 3 was carried out sequentially, named as C3. Except that step S5 was not carried out, other operations were unchanged, so that embodiment 4 was carried out sequentially, named as C4.

Embodiment 5-8

[0045]Embodiment 5-8: the investigation of reaction raw material ratio in the step S1

[0046] Change the mass ratio of hexachlorobutadiene and thiocyanuric acid in the raw material of step S1 to 6:1, 3:1, 3:2, and 1:1 respectively, and the other operations are all unchanged to obtain embodiment C5- C8.

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Abstract

The invention discloses a three-dimensional nitrogen-sulfur-co-doped porous carbon material as well as a preparation method and application thereof. The method comprises the following steps: carryingout a closed reaction among pyridine, hexachlorobutadiene and thiocyanuric acid under a reaction pressure higher than a barometric pressure, relieving the pressure to a normal pressure after the reaction is ended, drying the sample, and performing high-temperature treatment on the sample under inert gas shielding, thereby obtaining the three-dimensional nitrogen-sulfur-co-doped porous carbon material. The three-dimensional nitrogen-sulfur-co-doped porous carbon material disclosed by the invention has excellent electrochemical performance, so that the porous carbon material can be applied to the field of chemical energy storage, particularly the field of supercapacitors, and has excellent industrialization value.

Description

technical field [0001] The invention provides a composite material and its preparation method and use, more specifically, provides a three-dimensional nitrogen-sulfur co-doped porous carbon material that can be used for supercapacitors, its preparation method and use, and belongs to the field of inorganic functional materials. Background technique [0002] With the continuous growth of population and the continuous progress and innovation of modern automation, the demand for energy is also increasing. However, the traditional fossil energy has a tendency to be depleted continuously, and the consumption of a large amount of fossil energy for decades has brought a huge impact on the earth's environment. Therefore, finding new renewable alternative energy sources is the only way to maintain the sustainable development of human beings, and it has also become a key research topic of many scientists in this century. Supercapacitors, as a kind of green energy, have attracted the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05H01G11/32H01G11/86
CPCY02E60/13
Inventor 金辉乐王舜杨超李俊王继昌刘爱丽崔翠霞张晶晶
Owner WENZHOU UNIVERSITY
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