ETRI-Knowledge Sharing Plaform

KOREAN
논문 검색
Type SCI
Year ~ Keyword

Detail

Journal Article Supercapacitive Properties of Composite Electrodes Consisting of Polyaniline, Carbon Nanotube, and RuO2
Cited 43 time in scopus Share share facebook twitter linkedin kakaostory
Authors
Jang Myoun Ko, Kwang Sun Ryu, Sang Hyo Kim, Kwang Man Kim
Issue Date
2009-08
Citation
Journal of Applied Electrochemistry, v.39, no.8, pp.1331-1337
ISSN
0021-891X
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1007/s10800-009-9800-y
Abstract
Three types of composite supercapacitor electrodes were prepared; electroactive polyaniline (PANI), PANI/multi-walled carbon nanotube (CNT), and PANI/CNT/RuO2. Specifically, the PANI and PANI/CNT were prepared by polymerization, and PANI/CNT/RuO2 was prepared by electrochemical deposition of RuO2 on the PANI/CNT matrix. Cyclic voltammetry between -0.2 and 0.8 V (vs. Ag/AgCl) at various scan rates was performed to investigate the supercapacitive properties in an electrolyte solution of 1.0 M H 2SO4. The PANI/CNT/RuO2 electrode showed the highest specific capacitance at all scan rates (e.g., 441 and 392 F g -1 at 100 and 1,000 mV s-1, respectively). In contrast, the PANI/CNT electrode demonstrated the best capacitance retention (66%) after 104 cycles. Additional analysis including morphology and complex impedance spectroscopy suggested that with small loading of RuO2, an increase in capacitance was observed, but dissolution and/or detachment of RuO2 species from the electrode might occur during cycling to reduce the cycle performance. © 2009 Springer Science+Business Media B.V.
KSP Keywords
Capacitance retention, Carbon nano-tube(CNT), Composite Electrode, Cycle performance, Cyclic voltammetry, Electrochemical Deposition, First Stokes(S1), Specific capacitance, Supercapacitive properties, Supercapacitor electrodes, complex impedance spectroscopy