Journal
ELECTROCHIMICA ACTA
Volume 78, Issue -, Pages 532-538Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2012.06.044
Keywords
Nickel oxide nanoplatelet arrays; Nickel foam; Mesoporous; Electrochemical capacitors
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Funding
- National Natural Science Foundation of China [21173120]
- Natural Science Foundation of Anhui Province [10040606Q07]
- Nature Science Foundation of Jiangsu Province [BK2011030]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20060287026]
- Anhui University of Technology [2011009]
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In the work, we develop a novel two-step strategy to synthesize self-supported hexagonal nickel oxide nanoplatelet arrays on Ni foam: precipitating hydroxides followed by calcinating process. These nanoplatelets are composed of a multilayer of ultrathin mesoporous NiO nanosheets. The unique Ni foam-supported mesoporous NiO nanoplatelet arrays electrode promises fast ion and electron transport, large electroactive surface area, and excellent structural stability. As a result, superior pseudocapacitive performance is achieved with large specific capacitance in the range of 1124-864 F g(-1) and excellent cycling stability up to 5000 cycles, suggesting their promising application for electrochemical capacitors. (C) 2012 Elsevier Ltd. All rights reserved.
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