Nanostructured mesoporous carbon as electrodes for supercapacitors
Symmetrical carbon/carbon double layer capacitors (EDLCs) were fabricated employing nanostructured mesoporous nongraphitized carbon black (NMCB) powders and their EDLC behavior was studied using electrochemical techniques viz., cyclic voltammetry, a.c.-impedance, and constant current cycling. Rectan...
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Elsevier
2006
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oai:psasir.upm.edu.my:40087 http://psasir.upm.edu.my/id/eprint/40087/ Nanostructured mesoporous carbon as electrodes for supercapacitors Prabaharan, Savari R. S. Vimala, R. Zainal, Zulkarnian Symmetrical carbon/carbon double layer capacitors (EDLCs) were fabricated employing nanostructured mesoporous nongraphitized carbon black (NMCB) powders and their EDLC behavior was studied using electrochemical techniques viz., cyclic voltammetry, a.c.-impedance, and constant current cycling. Rectangular shape cyclic characteristics were observed indicating the double layer behavior of the NMCB carbon electrodes. The mechanism of double layer formation and frequency dependent capacitance were deduced from the ac-impedance analysis. Specific capacitance, power density and energy density were derived from constant current charge/discharge measurements. NMCB powders demonstrated a specific capacitance of about ∼39 F g−1 and the power density of 782 W kg−1 at a current density of 32 mA cm−2. Nevertheless, at a low current density (3 mA cm−2), the specific capacitance of ∼44 F g−1 was achieved, which corroborates with the values obtained by means of ac-impedance (40 F g−1) and cyclic voltammetry (41.5 F g−1). The test cells demonstrated the stable cycle performance over several hundreds of cycles. Elsevier 2006-10 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/40087/1/Nanostructured%20mesoporous%20carbon%20as%20electrodes%20for%20supercapacitors.pdf Prabaharan, Savari R. S. and Vimala, R. and Zainal, Zulkarnian (2006) Nanostructured mesoporous carbon as electrodes for supercapacitors. Journal of Power Sources, 161 (1). pp. 730-736. ISSN 0378-7753; ESSN: 1873-2755 http://www.sciencedirect.com/science/article/pii/S0378775306005908 10.1016/j.jpowsour.2006.03.074 |
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UPM IR |
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| language |
English |
| description |
Symmetrical carbon/carbon double layer capacitors (EDLCs) were fabricated employing nanostructured mesoporous nongraphitized carbon black (NMCB) powders and their EDLC behavior was studied using electrochemical techniques viz., cyclic voltammetry, a.c.-impedance, and constant current cycling. Rectangular shape cyclic characteristics were observed indicating the double layer behavior of the NMCB carbon electrodes. The mechanism of double layer formation and frequency dependent capacitance were deduced from the ac-impedance analysis. Specific capacitance, power density and energy density were derived from constant current charge/discharge measurements. NMCB powders demonstrated a specific capacitance of about ∼39 F g−1 and the power density of 782 W kg−1 at a current density of 32 mA cm−2. Nevertheless, at a low current density (3 mA cm−2), the specific capacitance of ∼44 F g−1 was achieved, which corroborates with the values obtained by means of ac-impedance (40 F g−1) and cyclic voltammetry (41.5 F g−1). The test cells demonstrated the stable cycle performance over several hundreds of cycles. |
| format |
Article |
| author |
Prabaharan, Savari R. S. Vimala, R. Zainal, Zulkarnian |
| spellingShingle |
Prabaharan, Savari R. S. Vimala, R. Zainal, Zulkarnian Nanostructured mesoporous carbon as electrodes for supercapacitors |
| author_facet |
Prabaharan, Savari R. S. Vimala, R. Zainal, Zulkarnian |
| author_sort |
Prabaharan, Savari R. S. |
| title |
Nanostructured mesoporous carbon as electrodes for supercapacitors |
| title_short |
Nanostructured mesoporous carbon as electrodes for supercapacitors |
| title_full |
Nanostructured mesoporous carbon as electrodes for supercapacitors |
| title_fullStr |
Nanostructured mesoporous carbon as electrodes for supercapacitors |
| title_full_unstemmed |
Nanostructured mesoporous carbon as electrodes for supercapacitors |
| title_sort |
nanostructured mesoporous carbon as electrodes for supercapacitors |
| publisher |
Elsevier |
| publishDate |
2006 |
| url |
http://psasir.upm.edu.my/id/eprint/40087/1/Nanostructured%20mesoporous%20carbon%20as%20electrodes%20for%20supercapacitors.pdf |
| _version_ |
1819296228155850752 |
| score |
13.4562235 |