Preparation method of nitrogen-doped porous carbon material

A technology of nitrogen-doped porous carbon and nitrogen-doped carbon, which is applied in the direction of carbon preparation/purification, electrical components, electrochemical generators, etc., can solve problems such as limitations, hindering development and application, and high prices, and achieve low production costs, High yield, easy and safe operation

Inactive Publication Date: 2019-06-25
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, new carbon materials such as graphene and carbon nanotubes have attracted much attention because of their good electrochemical properties and ultra-high specific surface area. their further development

Method used

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  • Preparation method of nitrogen-doped porous carbon material
  • Preparation method of nitrogen-doped porous carbon material
  • Preparation method of nitrogen-doped porous carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: Preparation of nitrogen-doped carbon material

[0026] Step 1. At room temperature, dissolve 4 g of glucose, 5 g of melamine, and 3 g of zinc chloride in deionized water and stir for 3 hours to form a complex precipitate, then dry to obtain a carbonized precursor, and put it in a 100°C drying oven dry overnight;

[0027] Step 2. Put the material obtained in step 1 into a tube furnace after being ground, pass in an inert gas, and raise the temperature to 700°C at a heating rate of 5°C / min and keep it warm for 2 hours for carbonization. After cooling, take it out ;

[0028] In step 3, the nitrogen-doped carbon material containing metal ions is first washed with hydrochloric acid, then ethanol and deionized water, filtered, and vacuum-dried to obtain the nitrogen-doped porous carbon material CNC-3.

Embodiment 2

[0029] Embodiment 2: Preparation of nitrogen-doped carbon material

[0030] Step 1. At room temperature, dissolve 4g glucose, 5g melamine, and 1g zinc chloride in deionized water and stir for 3 hours to form a complex precipitate, then dry to obtain the carbonized precursor, and put it in a drying oven at 100°C for drying dry overnight;

[0031] Step 2. Put the material obtained in step 1 into a tube furnace after being ground, pass in an inert gas, and raise the temperature to 700°C at a heating rate of 5°C / min and keep it warm for 2 hours for carbonization. After cooling, take it out ;

[0032] In step 3, the nitrogen-doped carbon material containing metal ions is first washed with hydrochloric acid, then washed with ethanol and deionized water, filtered, and vacuum-dried to obtain the nitrogen-doped porous carbon material CNC-1.

Embodiment 3

[0033] Embodiment 3: Preparation of nitrogen-doped carbon material

[0034] Step 1. At room temperature, dissolve 4g of glucose and 5g of melamine in deionized water and stir for 3 hours to form a complex precipitate, then dry to obtain a carbonized precursor, and put it in a 100°C drying oven to dry overnight;

[0035] Step 2. Put the material obtained in step 1 into a tube furnace after being ground, pass in an inert gas, and raise the temperature to 700°C at a heating rate of 5°C / min and keep it warm for 2 hours for carbonization. After cooling, take it out ;

[0036] Step 3, the nitrogen-doped carbon material containing metal ions is first washed with hydrochloric acid, then washed with ethanol and deionized water, filtered, and vacuum-dried to obtain the nitrogen-doped porous carbon material CNC-0.

[0037] figure 1 (a) (b) SEM images of CNC-0 and CNC-3, respectively, from figure 1 As can be seen in (a), when no ZnCl was added, the CNC material was in irregular granula...

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Abstract

The invention discloses a preparation method of a nitrogen-doped porous carbon material. A carbon nitrogen mixed precursor is sintered at high temperature; the control on the nitrogen doping proportion and form in the carbon material is realized; through mixing, metal salt can be decomposed; the control on the crystallization performance of the carbon material is realized. The method has the advantages that during the operation, simplicity, convenience and safety are realized; a prepared nitrogen-doped carbon composite material is suitable for being used as a lithium ion electrode material; the production cost is low; the yield is high; no by-products basically exist.

Description

technical field [0001] The invention relates to the technical field of energy and materials, in particular to a method for preparing a nitrogen-doped porous carbon material. Background technique [0002] The rapid social and economic development is accompanied by a large amount of energy consumption on the earth. Energy scarcity and environmental and ecological problems have become a barrier restricting the sustainable development of all countries. Carbon materials are currently the most widely used inorganic non-metallic materials, which have excellent properties such as energy storage, adsorption, loading and catalysis. Among them, new carbon materials such as graphene and carbon nanotubes have attracted much attention because of their good electrochemical properties and ultra-high specific surface area. their further development and application. [0003] Due to the characteristics of surface chemical inertness, high mechanical stability, good electrical conductivity, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05H01M4/36H01M4/583H01M10/0525
CPCY02E60/10
Inventor 李绍周王锐金津吟
Owner NANJING UNIV OF POSTS & TELECOMM
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