Application of three-dimensional sheet-shaped porous carbon material jointly doped with nitrogen and sulfur

A technology of nitrogen-sulfur co-doping and porous carbon materials, which is applied in the preparation/purification of carbon, electrical components, battery electrodes, etc., can solve the problems of potential safety hazards, limited application and industrial production, poor performance of acidic media, etc. Long, great application potential and industrial value, good stability

Active Publication Date: 2018-04-13
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is found through electrochemical tests that the catalyst prepared by the present invention has better oxygen reduction performance than traditional commercial Pt / C, and is used as a catalyst material in fuel cell oxygen reduction catalysis, and has high catalytic activity, but concentrated sulfuric acid is required in the synthesis process. Raw materials have potential safety hazards
As mentioned above, the prior art discloses a variety of heteroatom doping methods to prepare new carbon materials, and thus obtained a variety of new materials with excellent electrical properties, but these new materials can be obtained by doping, carbonization, and It has properties such as porosity and high specific surface area, but in terms of electrical properties, there are still defects such as poor performance in acidic media, which seriously limits its practical application and industrial production

Method used

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  • Application of three-dimensional sheet-shaped porous carbon material jointly doped with nitrogen and sulfur
  • Application of three-dimensional sheet-shaped porous carbon material jointly doped with nitrogen and sulfur
  • Application of three-dimensional sheet-shaped porous carbon material jointly doped with nitrogen and sulfur

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 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.

[0045] S2: Release the pressure to normal pressure, remove excess solvent from the reaction, and obtain sample A.

[0046] S3: Mix 1 g of the obtained sample with 6 g of thiourea;

[0047] S4: Put the sample under inert gas N 2 Perform high temperature treatment at 1000°C for 2 hours under protection to obtain sample B;

[0048] 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

[0049] Embodiment 2-4: the investigation of reaction raw material in the step S1

[0050] Except that no thiocyanuric acid was added in step S1 and step S5 was not carried out, other operations were all unchanged, so that embodiment 2 was carried out sequentially and 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 kept unchanged, so that embodiment 4 was carried out sequentially, named as C4.

Embodiment 5-8

[0051] Embodiment 5-8: the investigation of reaction raw material ratio in the step S1

[0052] 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 application of a three-dimensional sheet-shaped porous carbon material jointly doped with nitrogen and sulfur in preparation of an oxidization-reduction electrode of a fuel cell. The three-dimensional sheet-shaped porous carbon material jointly doped with nitrogen and sulfur has excellent electro-catalytic performance and can be used for preparing the oxidization-reductionelectrode, so that the three-dimensional sheet-shaped porous carbon material can be applied to the fuel cell and has huge application potential and industrial value in the field of electrocatalysis.

Description

technical field [0001] The invention relates to the application of a three-dimensional flake nitrogen-sulfur co-doped porous carbon material, which belongs to the field of inorganic functional materials. Background technique [0002] At present, traditional energy sources (such as natural gas, oil, and coal) are increasingly depleted and pollute the environment seriously, so it is urgent to develop green, environmentally friendly and renewable new energy sources. A fuel cell is an energy conversion device that can directly convert chemical energy in oxidants and fuels into electrical energy through redox reactions. Compared with traditional batteries, fuel cells are not limited by the "Carnot cycle", and have a relatively high energy conversion rate. They are an environmentally friendly energy conversion device, and have a wide range of raw material sources, safety and reliability, and low noise. Electrode material is one of the key factors affecting the oxygen reduction pe...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/90C01B32/05
CPCC01P2002/72C01P2002/82C01P2002/85C01P2004/03C01P2006/40H01M4/8828H01M4/9083Y02E60/50
Inventor 王舜杨超金辉乐李俊刘爱丽王继昌崔翠霞张晶晶
Owner WENZHOU UNIVERSITY
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