Journal
SURFACE & COATINGS TECHNOLOGY
Volume 299, Issue -, Pages 15-21Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2016.04.077
Keywords
Core-shell nanowires; Copper oxide; Cobalt oxide; Supercapacitor
Funding
- National Natural Science Foundation of China [51302060, 51272062, 51372063, 51502071, 51402078]
- National Basic Research Program of China (973 Program) [2014CB660815]
- Specialized Research Fund for the Doctoral Program of Higher Education [20130111120019]
- Natural Science Foundation of Anhui Province [1508085ME97, 1608085QE105]
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In this paper, we reported construction of CuO/Cu2O@CoO core-shell nanowire arrays by combining a chemical deposition method and post-thermal annealing process on Cu foil without any binders and conductive additives. The nanowire arrays were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM) and energy dispersive X-ray spectroscopy (EDX) techniques. The determination results indicate that the nanowire arrays are distinct CuO/Cu2O nanowire core decorated with branched CoO nanosheet shells. In addition, the as-obtained nanowire arrays demonstrate outstanding areal capacitance of 280 mF cm(-2) at a current density of 1 mA cm(-2) as well as superior cycling stability which remains 90.7% of initial capacitance after 3000 cycles. The facile and cost-effective synthesis integrated with the robust electrochemical performances suggests that the CuO/Cu2O@CoO core-shell nanowire arrays are expected to be promising candidate electrodes for high-performance supercapacitor and other energy storage applications. (C) 2016 Elsevier B.V. All rights reserved.
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