TY - JOUR
T1 - Effect of Pt nanostructures on the electrochemical properties of Co3O4 electrodes for micro-electrochemical capacitors
AU - Ahn, Hyo Jin
AU - Seong, Tae Yeon
N1 - Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) through World Class University program.
PY - 2009/6/10
Y1 - 2009/6/10
N2 - We report on the formation and electrochemical properties of Co3O4/Pt nanocomposite electrodes, which were fabricated by an RF magnetron co-sputtering system, for micro-electrochemical capacitors. High-resolution electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy examinations are performed to characterize the structural and chemical properties of the Co3O4/Pt nanocomposite electrodes. It is shown that the Co3O4/Pt6020 nanocomposite electrodes where RF powers of 60 and 20 W were applied to Co3O4 and Pt targets, respectively, give capacitance of 391.6 F/cm3 at 100 mV/s along with superb high-rate performance, which is much higher that those of Co3O4 only and other nanocomposite electrodes. The improvement is explained in terms of the formation of Co3O4-Pt combined nanostructures and their good electrical conductivity.
AB - We report on the formation and electrochemical properties of Co3O4/Pt nanocomposite electrodes, which were fabricated by an RF magnetron co-sputtering system, for micro-electrochemical capacitors. High-resolution electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy examinations are performed to characterize the structural and chemical properties of the Co3O4/Pt nanocomposite electrodes. It is shown that the Co3O4/Pt6020 nanocomposite electrodes where RF powers of 60 and 20 W were applied to Co3O4 and Pt targets, respectively, give capacitance of 391.6 F/cm3 at 100 mV/s along with superb high-rate performance, which is much higher that those of Co3O4 only and other nanocomposite electrodes. The improvement is explained in terms of the formation of Co3O4-Pt combined nanostructures and their good electrical conductivity.
KW - Eelectrochemical reactions
KW - Electrode materials
KW - Nanostructured materials
UR - http://www.scopus.com/inward/record.url?scp=67349115703&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2008.11.144
DO - 10.1016/j.jallcom.2008.11.144
M3 - Letter
AN - SCOPUS:67349115703
SN - 0925-8388
VL - 478
SP - L8-L11
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
IS - 1-2
ER -