期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 806, 期 -, 页码 170-179出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.07.213
关键词
Supercapacitors; Nickel oxide; Nickel sulfide; CNT; Cycling stability
资金
- National Natural Science Foundation of China [40501332]
- National Key Research and Development Program of China [2017YFD02018018]
- Natural Science Foundation of Shanxi Province [2016JQ3005]
- Project of Promoting Agricultural Science and Technology Demonstration of Yangling [2018-GG-29]
NiO/NiS@CNT and NiO@CNT nanocomposites were rapidly fabricated using a one-step microwave method in 60 s. The electrochemical performances of the prepared electrodes with different mass ratios and microwave conditions for supercapacitors were investigated. NiO/NiS@CNT showed a high specific capacitance of 809.7 F g(-1) at 1 A g(-1) and tremendous cycling stability of approximately 100% retention after 20 000 cycles at 5 A g(-1), indicating better electrochemical performance than NiO@CNT. The asymmetric supercapacitor device based on NiO/NiS@CNT//activated carbon (AC) displayed high energy and power density and excellent cycling stability, demonstrating enormous potential for energy-storage applications. (C) 2019 Elsevier B.V. All rights reserved.
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