Journal
JOURNAL OF POWER SOURCES
Volume 195, Issue 2, Pages 680-683Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2009.08.002
Keywords
Manganese oxide nanosheet; Cobalt oxyhydroxide nanowire; Potentiostatic deposition; Electrostatic self-assembly; Electrochemical capacitor
Funding
- Zhejiang Natural Science Foundation [Y4080042]
- Australian Research Council
- China Scholarship Council (CSC)
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Multilayered films of cobalt oxyhydroxide nanowires (CoOOHNW) and exfoliated manganese oxide nanosheet (MONS) are fabricated by potentiostatic deposition and electrostatic self-assembly on indium-tin oxide coated glass substrates. The morphology and chemical composition of these films are characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectra (XPS) and the potential application as electrochemical supercapacitors are investigated using cyclic voltammetry and charge-discharge measurements. These ITO/CoOOHNW/MONS multilayered film electrodes exhibit excellent electrochemical capacitance properties, including high specific capacitance (507 F g(-1)) and long cycling durability (less 2% capacity loss after 5000 charge/discharge cycles). These characteristics indicate that these newly developed films may find important application for electrochemical capacitors. Crown Copyright (C) 2009 Published by Elsevier B. V. All rights reserved.
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