Method for preparing capacitor electrode material

• Main Authors: ZHANG XINTONG, SHAO CHANGLU, LI XINGHUA, LIU YICHUN, MIAO FUJUN
• Format: Patent
• Language: English
• Published: 20.01.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention provides a method for preparing nitrogen-doped porous carbon nanofiber material with a high specific surface area. The nitrogen-doped porous carbon nanofiber material with the high specific surface area can be obtained by treating electrospun polyacrylonitrile/polyaniline composite nanofibers in an inert atmosphere at an appropriate temperature. Compared with the prior art, the invention uses the electrospun polyacrylonitrile nanofibers directly as a substrate for growing a polyaniline nanowire and synthesizing the electrospun polyacrylonitrile/polyaniline composite nanofibers. In addition to having high content of nitrogen atoms, the composite nanofibers also have an extensive pore structure on the surface. The composite nanofibers can be heat-treated to obtain the nitrogen-doped porous carbon nanofiber material with the high specific surface area. The obtained material is supercapacitor electrode material and has excellent electrochemical properties. In particular, the method for preparing the nitrogen-doped porous carbon nanofiber material with the high specific surface area is simple in preparation process, short in process flow, low in device dependence and suitable for industrial mass production.