Journal
APPLIED SURFACE SCIENCE
Volume 356, Issue -, Pages 259-265Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2015.08.037
Keywords
Hydrothermal; Supercapacitor; Birnessite-type MnO2; Nanoflower; Specific 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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Birnessite-type MnO2 nanoflowers assembled by hierarchical nanosheets were successfully synthesized via a facile and simple hydrothermal process. The ration of reactants is a critical factor affects formation process of MnO2 nanoflowers. The electrochemical test of the as-synthesized birnessite-type MnO2 exhibits excellent electrochemical property with ideal voltammetry behavior, high specific capacitance (197.3 F g(-1) at 1 A g(-1)) and superior cycling stability (only 5.4% capacitance loss after 1000 cycling test). The distinct hierarchical nanostructure and impressive electrochemical performances suggest the birnessite-type MnO2 is a promising material for supercapacitor applications. (C) 2015 Elsevier B.V. All rights reserved.
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