期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 732, 期 -, 页码 80-85出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2014.09.004
关键词
Hybrid thin film; SILAR; Nanoflowers; Supercapacitor
资金
- University Grants Commission (UGC), New Delhi [36-209/2008 (SR)]
Nanoflowers-like CuO/Cu(OH)(2) hybrid thin films have been synthesized by simple and inexpensive successive ionic layer adsorption and reaction (SILAR) method. Prepared CuO/Cu(OH)(2) samples have been used for the structural and morphological characterization with different characterization techniques. The electrochemical supercapacitive properties of CuO/Cu(OH)(2) nanoflowers were investigated by cyclic voltammetry, galvanostatic charge/discharge measurements and electrochemical impedance spectroscopy. Results showed that, CuO/Cu(OH)(2) nanoflower exhibits the maximum specific capacitance of 459 F g(-1) at 5 mV s(-1) in 2 M KOH electrolyte. Further, EIS analysis shows lower ESR value, high power performance, excellent rate as well as frequency response of CuO/Cu(OH)(2) nanoflowers. Ragone plot ascertains good power and energy densities of CuO/Cu(OH)(2) nanoflowers which confirms their suitability for energy storage devices. Thus, present investigation successfully reports the applicability of easy and inexpensive SILAR method for synthesis of CuO/Cu(OH)(2) nanostructure to be utilized in supercapacitors. (C) 2014 Published by Elsevier B.V.
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