Journal
APPLIED SURFACE SCIENCE
Volume 351, Issue -, Pages 862-868Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2015.06.045
Keywords
alpha-MnO2; Hydrothermal; Supercapacitor; Urchin-like structure; Nanowires; Capacitance
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Funding
- National Natural Science Foundation of China [11332013]
- fund of Chongqing University's Large-scale Equipment [2013121568]
- Graduate Student Scientific Research Innovation Project of Chongqing [CYS14011]
- Fundamental Research Funds for Central Universities [106112015CDJXY130013]
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Urchin-like alpha-MnO2 nanostructures were successfully synthesized via a simple hydrothermal process at different synthesis temperatures without using any template or surfactant. The microstructure and morphology of as-synthesized products were systematically investigated by focused ion beam, transmission electron microscopy, and high-resolution transmission electron microscopy. The electrochemical test of the prepared MnO2 exhibits ideal cyclic voltammetry behavior, high specific capacitance (151.5 F g(-1) at a current density of 1 A g(-1)) and excellent cycling stability (93.4% capacitance retention after 1000 cycles) which suggests its promising application as supercapacitor. (C) 2015 Elsevier B.V. All rights reserved.
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