期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 741, 期 -, 页码 527-531出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.01.168
关键词
Transition metal oxides; Ordered structure; Supercapacitor; Energy density; Stability
资金
- National Natural Science Foundation of China [61774033]
- Natural Science Foundation of Jiangsu Province of China [BK20141338]
- Fundamental Research Funds for the Central Universities [3207047410]
- Priority Academic Program Development of Jiangsu Higher Education Institutions [1107047002]
The ordered corn-like CuCo2O4 nanoforests were directly deposited on Ni foam by a hydrothermal/annealing method as a binder-free electrode for a symmetric supercapacitor. The ordered one-dimensional nanostructure can enhance an effective electron transport. The abundant sub-structure can be used to contribute to increasing a large number of active sites for Faradaic reactions. The binder-free loading can help to reduce the ohmic polarization during the charge/discharge process. For three-electrode configuration, the specific capacitance achieved 820 F/g at a current density of 2 mA/cm(2) and long-term capacity retention of similar to 94% after 1500 cycle. The symmetric device gained a high energy density of 17 W h/kg at a power density of 480 W/kg. (c) 2018 Elsevier B.V. All rights reserved.
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