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- Title
Highly stable performance of supercapacitors using microporous carbon derived from phenol-melamine-formaldehyde resin.
- Authors
Xiang, Xiaoxia; Liu, Enhui; Xie, Hui; Tian, Yingying; Wu, Yuhu; Wu, Zhilian; Zhu, Yinhai
- Abstract
A series of microporous carbons were prepared by simple carbonization and activation of phenol-melamine-formaldehyde resin. The morphology, surface area, and elemental composition of the samples were investigated by scanning electron microscope, Brunauer-Emmett-Teller measurement, Raman spectra, and elemental analysis, respectively. Electrochemical characteristics were evaluated by cyclic voltammograms, galvanostatic charge/discharge, and electrochemical impedance spectroscopy measurements in 6.0 mol L KOH. The microporous carbon activated by KOH presented a high specific capacitance of 202 F g at a scan rate of 2 mV s. Furthermore, the KOH-activated microporous carbon electrode exhibited durable operation, the total loss of capacitance after 20,000 cycles is 2% at a current density of 500 mA g. The good electrochemical performance of the activated carbon was ascribed to well-developed micropores, high surface area, larger pore volume as well as oxygen groups.
- Subjects
CARBON; CARBONIZATION; PHENOL; MELAMINE; FORMALDEHYDE; ELECTRODES
- Publication
Journal of Solid State Electrochemistry, 2012, Vol 16, Issue 8, p2661
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-012-1692-9