Method for preparing nitrogen-doped porous carbon material

A nitrogen-doped porous carbon and carbon tetrachloride technology is applied in the fields of inorganic nanomaterials and electrochemistry, which can solve the problems such as the unsatisfactory capacitance of the material, and achieve the effects of maintaining stability, uniform distribution and high specific surface area.
CN101306807BInactive Publication Date: 2011-08-03SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Publication Date
2011-08-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method of preparing a nitrogen-doped porous carbon material, and belongs to the field of inorganic nanometer materials and electrochemistry. The inventive method comprises the steps of: preparing mesoporous carbon nitrogen compound with mesoporous silicon oxide powder and ethylene diamine as precursors, and activating with an activator potassium hydroxide at high temperature while controlling the mass ratio of the potassium hydroxide and the mesoporous carbon nitrogen material to obtain a nitrogenous material with high specific surface area and pore volume. The specific electric double layer capacitance of the inventive nitrogen-doped porous carbon material in alkaline aqueous electrolyte under potential scanning speed of 2mV / s is 328F / g and 318F / g, respectively, which are much higher than that of the reported porous carbon materials. The inventive nitrogen-doped porous carbon material has good application prospect as a high-power super capacitor active material.
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Description

technical field

[0001] The invention relates to a preparation method of a nitrogen-doped porous carbon material, which belongs to the field of inorganic nanometer materials and electrochemistry. Background technique

[0002] Supercapacitors, also known as electrochemical capacitors, are a new type of energy storage element between batteries and traditional electrostatic capacitors. They have the characteristics of high specific capacity, high power, good cycle performance, long life, and wide operating temperature limit. Supercapacitors have higher power density than batteries and greater energy density than traditional capacitors. In recent years, with the miniaturization of electronic and electrical equipment and the continuous development of the electric vehicle industry, supercapacitors as backup power and memory backup devices have increasingly attracted people's attention.

[0003] Electrode materials are the key to supercapacitor research, and one of the research hot...

Claims

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