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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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প্রধান লেখক: Prabaharan, Savari R. S., Vimala, R., Zainal, Zulkarnian
বিন্যাস: প্রবন্ধ
ভাষা:English
প্রকাশিত: Elsevier 2006
অনলাইন ব্যবহার করুন:http://psasir.upm.edu.my/id/eprint/40087/1/Nanostructured%20mesoporous%20carbon%20as%20electrodes%20for%20supercapacitors.pdf
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id oai:psasir.upm.edu.my:40087
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spelling 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
institution UPM IR
collection UPM IR
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
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score 13.4562235

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