期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 22, 期 33, 页码 16939-16942出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm33249c
关键词
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资金
- National Natural Science Foundation of China [20925621, 21176068, 21106038, 51173043, 21136006]
- Special Projects for Nanotechnology of Shanghai [1052nm02300, 11nm0500800, 11nm0500200]
- Fundamental Research Funds for the Central Universities
We demonstrated the facile loading of ultrafine and loosened K-birnessite MnO2 floccules on the surface of polyaniline (PANI) nanofibers by simply soaking the polyaniline nanofibers in a KMnO4 aqueous solution for electrochemical energy storage applications. The as-prepared PANI-MnO2 coaxial nanofibers with optimal composition, when applied as an electrode, exhibited a high specific capacitance (383 F g(-1) at 0.5 A g(-1)) with good rate and cycling stability in 1 M Na2SO4 aqueous solution. Such intriguing electrochemical performance is mainly attributed to the synergistic effects of the combined pseudo-capacitive contributions from the core and shell. The present findings promoted the development of advanced electrode materials, exhibiting huge potential for supercapacitors.
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