Intense Pulsed Light-assisted Facile and Agile Fabrication of Cobalt Oxide/Nickel Cobaltite Nanoflakes on Nickel-Foam for High Performance Supercapacitor

Title
Intense Pulsed Light-assisted Facile and Agile Fabrication of Cobalt Oxide/Nickel Cobaltite Nanoflakes on Nickel-Foam for High Performance Supercapacitor
Author
김학성
Keywords
Supercapacitors; Metal oxide; Intense pulsed light; Nanoflake
Issue Date
2015-01
Publisher
ELSEVIER SCIENCE SA
Citation
JOURNAL OF ALLOYS AND COMPOUNDS, v. 618, Page. 227-232
Abstract
We report an extremely efficient method for fabricating high-performance supercapacitive CoO/NiCo2O4 nanoflakes on Ni-foam substrate by using intense pulsed light (IPL) technology. Structural and morpho- logical characterization is carried out using X-ray diffraction (XRD) and scanning and transmission elec- tron microscopies (SEM and TEM). These reveal that hierarchically structured CoO/NiCo2O4 nanoflakes of 150–200 nm in size and a thickness around 10 nm are formed on Ni-foam substrate by IPL irradiation with energy of 20 J cm􏰀2 for 15 ms. The electrochemical behavior of the composites is analyzed by cyclic voltammetry and galvanostatic charge–discharge experiments. The IPL-induced CoO/NiCo2O4/Ni-foam electrode exhibits a very high specific capacitance of 2163Fg􏰀1 at a discharge current density of 1 Ag􏰀1 and a good rate performance of 908 Fg􏰀1 even at 50 Ag􏰀1.
URI
http://hdl.handle.net/20.500.11754/21356http://www.sciencedirect.com/science/article/pii/S0925838814020325
ISSN
0925-8388
DOI
10.1016/j.jallcom.2014.08.166
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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