期刊
NEW JOURNAL OF CHEMISTRY
卷 42, 期 4, 页码 2964-2969出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nj04269h
关键词
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资金
- Basic Research Laboratory through the National Research Foundations of Korea - Ministry of Science, ICT and Future Planning [NRF-2015R1A4A1041584]
Unique ZnMn2O4@ZnFe2O4 microspheres were fabricated on Ni foam using a facile and cost-effective hydrothermal method for high-performance supercapacitor applications. The resulting ZnMn2O4@ZnFe2O4 electrode was characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and electrochemical techniques. The ZnMn2O4@ZnFe2O4 electrode exhibited a microsphere-like morphology with a mean size of similar to 50-115 nm. The electrochemical performance of the ZnMn2O4@ZnFe2O4 electrode was investigated and the results showed that the ZnMn2O4@ZnFe2O4 electrode exhibits a high specific capacitance of 1024.66 F g(-1) at 10 mA cm(-2), low internal resistance, and remarkable cycling stability with 95.8% capacitance retention after 3000 charge-discharge cycles, which was superior to those of the ZnMn2O4 and ZnFe2O4 electrodes. Such enhanced electrochemical performance and the facile synthetic method of ZnMn2O4@ZnFe2O4 electrode materials offer great promise in next generation supercapacitor applications.
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