Intense pulsed light-assisted facile and agile fabrication of cobalt oxide/nickel cobaltite nanoflakes on nickel-foam for high performance supercapacitor applications

Title
Intense pulsed light-assisted facile and agile fabrication of cobalt oxide/nickel cobaltite nanoflakes on nickel-foam for high performance supercapacitor applications
Authors
안희준
Keywords
Intense pulsed light; Supercapacitors; Metal oxide; 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 morphological characterization is carried out using X-ray diffraction (XRD) and scanning and transmission electron 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 2163 Fg(-1) at a discharge current density of 1 Ag-1 and a good rate performance of 908 Fg(-1) even at 50 Ag-1. (C) 2014 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11754/21487http://www.sciencedirect.com/science/article/pii/S0925838814020325
ISSN
0925-8388
DOI
http://dx.doi.org/10.1016/j.jallcom.2014.08.166
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > DEPARTMENT OF ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
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