期刊
MATERIALS LETTERS
卷 123, 期 -, 页码 229-234出版社
ELSEVIER
DOI: 10.1016/j.matlet.2014.02.103
关键词
Nanocomposites; Energy storage and conversion; Microstructure; Supercapacitor
资金
- National Natural Science Foundation of China [51104194, 21103127]
- Doctoral Fund of Ministry of Education of People's Republic of China [20110191120014]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars [43]
- National Key laboratory of Fundamental Science of Micro/Nanodevice and System Technology Chongqing University [2013MS06]
- State Education Ministry and Fundamental Research Funds for the Central Universities University, PR China [CDJZR12248801, CDJZR12135501, CDJZR13130035]
In this work, we developed a one-pot approach to fabricate CoFe2O4/FeOOH nanocomposites without any surfactant. By tailoring the urea concentration, flower-like nanostructures of CoFe2O4/FeOOH nanocomposites can be obtained. The electrochemical properties of the CoFe2O4/FeOOH electrodes were elucidated by cyclic voltammograms, galvanostatic charge/discharge tests and electrochemical impedance spectroscopy in 6 M KOH electrolyte. Flower-like CoFe2O4/FeOOH exhibited a specific capacitance of 332.4 F g(-1) at the current density of 0.5 A g(-1), and excellent cycling stability (913% retention after 1000 cycles, 5 A g-1). These findings suggested that this facile synthetic strategy could be useful to design and synthesize hierarchical electrode nanocomposites with enhanced supercapacitive performance. (C) 2014 Elsevier B.V. All rights reserved.
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