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Influence of Ag doped CuO nanosheet arrays on electrochemical behaviors for supercapacitors
- Source :
-
Electrochimica Acta . Jul2012, Vol. 75, p208-212. 5p. - Publication Year :
- 2012
-
Abstract
- Abstract: The electrode of array of CuO nanosheet is prepared via a template-free growth method, and it is doped by Ag via the silver mirror reaction. The morphology of Ag-doped CuO nanosheet is examined by scanning electron microscopy. The phase structure of the Ag-doped CuO nanosheet is analyzed by X-ray diffraction spectroscopy. The supercapacitance behavior of Ag-doped CuO nanosheet is investigated by cyclic voltammetry, galvanostatic charge/discharge test and electrochemical impedance spectroscopy. The results show that the thickness of a single nanosheet is up to around 150nm. The specific capacitance of the Ag-doped CuO nanosheet electrode is 689Fg−1 at 1Ag−1 and 299Fg−1 at 10Ag−1, respectively, much higher than that of the unmodified CuO nanosheet arrays (418Fg−1 at 1Ag−1 and 127Fg−1 at 10Ag−1). The improved capacitance is explained in terms of the presence of dispersed Ag particle coated the CuO nanosheet arrays having good electrical conductivity. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00134686
- Volume :
- 75
- Database :
- Academic Search Index
- Journal :
- Electrochimica Acta
- Publication Type :
- Academic Journal
- Accession number :
- 76917143
- Full Text :
- https://doi.org/10.1016/j.electacta.2012.04.134