Nitrogen-functionalized microporous carbon nanoparticles for high performance supercapacitor electrode

Nitrogen-functionalized microporous carbon nanoparticles (N-MCNs) are prepared by direct carbonization of a novel polymer obtained from the Schiff base reaction of terephthalaldehyde and m-phenylenediamine. The carbonization temperature plays a crucial role in the porosity, surface chemistry and cap...

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Bibliographic Details
Published in:Electrochimica acta 2015-01, Vol.153, p.448-455
Main Authors: Zhao, Yunhui, Liu, Mingxian, Deng, Xiangxiang, Miao, Ling, Tripathi, Pranav K., Ma, Xiaomei, Zhu, Dazhang, Xu, Zijie, Hao, Zhixian, Gan, Lihua
Format: Article
Language:English
Subjects:
Aqueous electrolytes
Capacitance
Carbon
Carbonization
Cycles
Discharge
Electrode
Electrodes
Microporous carbon nanoparticles
Nanoparticles
Nitrogen-functionalization
Supercapacitor
Surface chemistry
Ultrahigh-rate performance
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Summary:Nitrogen-functionalized microporous carbon nanoparticles (N-MCNs) are prepared by direct carbonization of a novel polymer obtained from the Schiff base reaction of terephthalaldehyde and m-phenylenediamine. The carbonization temperature plays a crucial role in the porosity, surface chemistry and capacitive performance for the carbons. N-MCN850 sample shows a much larger specific surface area of 1938m2g−1, a higher specific capacitance of 397Fg−1 and 145Fg−1 at the current density of 0.1 and 100Ag−1 in 6M KOH aqueous electrolyte, respectively. The results indicate its outstanding capacitive behavior and ultrahigh-rate performance. In addition, the electrode shows excellent cycling stability along with 98% of the initial specific capacitance after 5000 charge/discharge cycles.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2014.11.173