| Title |
Characterization of Electric Double-Layer Capacitors with Carbon Nanotubes Directly Synthesized on a Copper Plate as a Current Collector |
| Authors |
정동원(Dong Won Jung); 이창수(Chang Soo Lee); 박순(Soon Park); 오은석(Eun Souk Oh) |
| DOI |
https://doi.org/10.3365/KJMM.2011.49.5.419 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
carbon; chemical synthesis; electrochemistry; scanning electron microscopy(SEM) electric double-Layer capacitor (EDLC) |
| Abstract |
Carbon nanotubes (CNTs) were directly synthesized on a copper (Cu) plate as a current collector by the catalytic thermal vapor deposition method for an electric double-layer capacitor (EDLC) electrode. The diameters of vertically aligned CNTs grown on the Cu plate were 20~30 nm. From cyclic voltammetry (CV) results, the CNTs/Cu electrode showed high specific capacitance with typical profiles of EDLCs. Rectangular-shaped CV curves suggested that the CNTs/Cu electrode could be an excellent candidate for an EDLC electrode. The specific capacitances were in a range of 25~75 F/g with a scan rate of 10~100 mV/s and KOH electrolyte concentration 1~6 M, and were maintained up to 1000 charge/discharge cycles due to strong adhesion between the Cu substrate and the CNTs. |