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A kind of preparation method and application of nitrogen-doped activated carbon

A technology of activated carbon and nitrogen doping, applied in chemical instruments and methods, climate sustainability, sustainable manufacturing/processing, etc., can solve the problems of complex degradation process, high cost, and inability to use supercapacitors, etc., and achieve simple preparation equipment , good rate performance, stable and reversible electrochemical characteristics

Active Publication Date: 2018-03-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method and application of nitrogen-doped activated carbon in order to solve the problems of complex waste degradation process of nitrogen-based thermosetting polymers, high cost and inability to be used in supercapacitors

Method used

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  • A kind of preparation method and application of nitrogen-doped activated carbon
  • A kind of preparation method and application of nitrogen-doped activated carbon
  • A kind of preparation method and application of nitrogen-doped activated carbon

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specific Embodiment approach 1

[0022] Specific embodiment one: the preparation method of a kind of nitrogen-doped activated carbon of this embodiment is carried out according to the following steps:

[0023] 1. Put p-phenylenediamine, paraformaldehyde and nitrogen methylpyrrolidone into a three-necked bottle, nitrogen environment protection, magnetic stirring, after the reaction, the temperature is lowered to room temperature, and aminal dynamic covalent network structure polymer gel is obtained. gelatinous substance;

[0024] 2. Precipitate the aminal dynamic covalent network structure polymer gel-like substance with acetone, filter and vacuum dry to obtain the aminal dynamic covalent network structure polymer product;

[0025] 3. Place the aminal dynamic covalent network structure polymer product (PHDN) in a tube furnace for high-temperature pyrolysis to obtain nitrogen-doped activated carbon; wherein the molar ratio of p-phenylenediamine and paraformaldehyde is 1: (1~6), the molar volume ratio of p-phen...

specific Embodiment approach 2

[0028] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the molar ratio of p-phenylenediamine and paraformaldehyde in step 1 is 1:5. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0029] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the molar volume ratio of p-phenylenediamine and nitrogen methyl pyrrolidone in step one is 1mmol:3ml. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method of nitrogen-doped activated carbon and application thereof, aiming at solving the problems of complex process and high cost of degradation of wastes of nitrogenous bases-contained thermosetting polymers. The method comprises the following steps: preparing a polymer gel substance with an aminal dynamic covalent network structure; preparing a polymer product with the aminal dynamic covalent network structure; then performing high-temperature pyrolysis to obtain the nitrogen-doped activated carbon. The nitrogen-doped activated carbon prepared by the invention is applied to supercapacitors. The preparation method provided by the invention has the advantages that the preparation equipment is simple, environment-friendly and energy-saving, the prepared insoluble and non-melt thermosetting polymers are treated properly to be recycled, and the operation is simple and easy for large-scale production; the obtained activated carbon can be used as an electrode material of the supercapacitors. The invention belongs to the technical field of nano materials.

Description

technical field [0001] The invention relates to a preparation method and application of nitrogen-doped activated carbon. Background technique [0002] Nitrogen-containing thermosetting polymers, such as polyamide, polybenzimidazole, polyimide, etc., have good thermomechanical properties, chemical corrosion resistance, electrical properties, etc., and can be used to prepare foams, adhesives, etc. agents, automobiles, aviation, electronic equipment, etc. But it is well known that thermosetting polymers have the property of "insoluble and infusible". Therefore, it is difficult to transform once it is prepared, and it is difficult to dispose of the used product. Generally, the degradation process requires high requirements, high cost, and it takes a long time to degrade. [0003] Traditional energy sources are increasingly depleted, stimulating people to look for alternative energy sources and effective energy storage devices. Supercapacitors have high power density, short cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/318C01B32/324H01G11/34
CPCY02E60/13Y02P20/10
Inventor 黄玉东马丽娜刘荣牛海军张海洋刘丽
Owner HARBIN INST OF TECH