A three-dimensional nitrogen-sulfur co-doped porous carbon material and its preparation method and application

A nitrogen-sulfur co-doped, porous carbon material technology, applied in carbon preparation/purification, hybrid/electric double-layer capacitor manufacturing, hybrid capacitor electrodes, etc. The reaction steps are cumbersome and other problems, and the effect of good application prospect and industrialization potential, huge application potential and industrial value, and simple preparation process can be achieved.

Active Publication Date: 2020-07-03
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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  • A three-dimensional nitrogen-sulfur co-doped porous carbon material and its preparation method and application
  • A three-dimensional nitrogen-sulfur co-doped porous carbon material and its preparation method and application
  • A three-dimensional nitrogen-sulfur co-doped porous carbon material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] S1: Put 28ml of pyridine, 2ml of hexachlorobutadiene and 1g of thiocyanuric acid in an autoclave lined with polytetrafluoroethylene for 4 hours at 200°C and 2MPa, in which pyridine and hexachlorobutadiene The mass ratio of olefin to thiocyanuric acid is 24:3:1.

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

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

[0042] S4: Put the sample in inert gas N 2 High-temperature treatment at 1000° C. for 2 hours under protection to obtain sample B; S5: ball milling the obtained sample B for 15 minutes to obtain the three-dimensional flake nitrogen-sulfur co-doped porous carbon material. Name it C1.

Embodiment 2-4

[0043] Example 2-4: Investigation of reaction materials in step S1

[0044] Except that thiocyanuric acid was not added in step S1 and step S5 was not performed, the other operations were the same, so that Example 2 was performed in sequence and named C2. Except that step S3 and step S5 are not performed, the other operations are the same, so that embodiment 3 is performed sequentially and named C3. Except that step S5 is not performed, the other operations are the same, so that embodiment 4 is performed sequentially and named C4.

Embodiment 5-8

[0045] Example 5-8: Investigation of the proportion of reaction materials in step S1

[0046] The mass ratios of hexachlorobutadiene and thiocyanuric acid in the raw materials of step S1 were changed to 6:1, 3:1, 3:2, and 1:1, and other operations were unchanged to obtain Example 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 a preparation method and application thereof, and more specifically, provides a three-dimensional nitrogen-sulfur co-doped porous carbon material that can be used for supercapacitors, and a preparation method and application thereof, belonging to the field of inorganic functional materials. Background technique [0002] With the continuous growth of the population and the continuous progress and innovation of modern automation, the demand for energy is also increasing. However, traditional fossil energy has a tendency to continue to be depleted, and the consumption of a large amount of fossil energy for decades has brought a huge impact on the global environment. Therefore, finding new renewable alternative energy sources is the only way to maintain the sustainable development of mankind, and it has also become a key subject for many scientists in this century. Supercapacitors, as a kind of green energy, have...

Claims

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Application Information

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Patent Type & Authority Patents(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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