Nitrogen-doped porous carbon material, preparation method thereof and application of nitrogen-doped porous carbon material in supercapacitor

A technology of nitrogen-doped porous carbon and melamine, which is applied in the preparation/purification of carbon, hybrid capacitor electrodes, etc., can solve the problems of uneconomical amount of activator, insufficient mixing, and dangerous activator, etc., and achieves easy large-scale production, Inexpensive and highly controllable effects
CN110078047AInactive Publication Date: 2019-08-02SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Publication Date
2019-08-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a nitrogen-doped porous carbon material, a preparation method thereof and application of the nitrogen-doped porous carbon material in a supercapacitor. The preparation methodcomprises the following steps: (1) heating and polymerizing a formaldehyde solution and melamine in water, and then adding potassium salt and polyethylene glycol to obtain a clear solution, wherein the potassium salt is at least one of potassium nitrate, potassium acetate, potassium nitrite, potassium sulfate, potassium sulfite, potassium chloride, potassium hypochlorite and potassium perchlorate;(2) drying the obtained clear solution at the temperature of 60-80 DEG C until a xerogel is formed; and (3) placing the obtained xerogel in a protective atmosphere, activating at the temperature of 700-1000 DEG C, and washing and drying to obtain the nitrogen-doped porous carbon material.
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Description

technical field

[0001] The invention relates to a nitrogen-doped porous carbon material powder and its preparation method and application, in particular to a method for preparing a nitrogen-doped porous carbon material powder mainly composed of micropores by a sol-gel method, which belongs to nitrogen-doped The field of porous carbon materials. Background technique

[0002] In order to meet the energy demand brought about by the rapid economic development, various energy storage devices such as supercapacitors, lithium-ion batteries, and lithium-sulfur batteries have received extensive attention. Among them, supercapacitor has the characteristics of high power density, long cycle life, safety and cheapness, etc. It is an excellent energy storage system, and it is also a hot field of recent research, with a very wide application prospect. Carbon materials are very suitable as electrode materials for supercapacitors due to their good electrical conductivity and excellent spec...

Claims

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