期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 2, 期 13, 页码 4795-4802出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta14647b
关键词
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资金
- National Natural Science Foundation of China [21171035, 51302035]
- Key Grant Project of Chinese Ministry of Education [313015]
- PhD Programs Foundation of the Ministry of Education of China [20110075110008, 20130075120001]
- National 863 Program of China [2013AA031903]
- Science and Technology Commission of Shanghai Municipality [13ZR1451200]
- Fundamental Research Funds for the Central Universities
- Program for Changjiang Scholars and Innovative Research Team in University [IRT1221]
- Shanghai Leading Academic Discipline Project [B603]
- Program of Introducing Talents of Discipline to Universities [111-2-04]
We demonstrate the design and fabrication of hierarchical mesoporous NiCo2O4@MnO2 core-shell nanowire arrays on nickel foam via a facile hydrothermal and electrodeposition process for supercapacitor applications. In order to increase the energy density and voltage window, a high-voltage asymmetric supercapacitor based on hierarchical mesoporous NiCo2O4@MnO2 core-shell nanowire arrays on nickel foam as the positive electrode and activated carbon (AC) as the negative electrode was successfully fabricated. The as-fabricated asymmetric supercapacitor device achieved a specific capacitance of 112 F g(-1) at a current density of 1 mA cm(-2) with a stable operational voltage of 1.5 V and a maximum energy density of 35 W h kg(-1). The present NiCo2O4@MnO2 core-shell nanowire arrays with remarkable electrochemical properties could be considered as potential electrode materials for next generation supercapacitors in high energy density storage systems.
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