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A Facile Synthesis of Nitrogen‐Doped Porous Carbon Materials for High‐Performance Supercapacitors
Author(s) -
Yao Lu,
Chen DaMing,
Yan Song,
Lin JingJing,
Liu YePing,
Lian Jun,
Liu YueRan,
Lin HuaLin,
Han Sheng
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201803808
Subject(s) - supercapacitor , carbonization , materials science , electrochemistry , carbon fibers , specific surface area , chemical engineering , melamine , capacitance , nitrogen , porosity , electrode , nanotechnology , composite material , chemistry , catalysis , organic chemistry , scanning electron microscope , composite number , engineering
A simple way for N‐doped porous carbon materials (ANCs) was prepared in N 2 atmosphere through the KOH‐assisted carbonization of commercial melamine foam (MF) attached glucose. Adding glucose and KOH activation process have great effects on improving the electrochemical properties of ANCs materials. Compared with other materials, the optimal ANCs‐800, which is obtained with a KOH/glucose/MF weight ratio of 5:20:1 at 800 °C, exhibits the best capacitance performance with the specific surface area (SSA) of 1481 m 2 g −1 and high nitrogen content of 3.7 at. %. It possesses prominent specific capacitance (387 F g −1 at 0.5 A g −1 ) and excellent cycling stability (98.6% retention after 10,000 cycles). Furthermore, in the symmetric supercapacitor, the ANCs‐800 electrode material maintains high energy density (24.2 W h kg −1 at 701.07 W kg −1 ) and great cycling performance (96.3% after 10,000 cycles). Accordingly, the facile synthetic approach and attractive electrochemical properties make ANCs‐800 a popular capacitor material.