期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 2013, 期 21, 页码 3719-3725出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201300265
关键词
Mesoporous materials; Supercapacitors; Electrochemistry; Manganese oxide
资金
- National Natural Science Foundation of China (NSFC) [50990304]
- State 973 Project [2009CB939904, 2007CB936704]
- Major Basic Research Program of Shanghai [07J14001]
Mesoporous nanostructured -manganese dioxide (MN--MnO2) powders in a sponge-like three-dimensional network have been successfully synthesized in high yields in a simple, template-free manner at room temperature. Its unique structure has been found to be related to the glucose solution rather than to the KMnO4 solution. A possible mechanism for the formation of MN--MnO2 by the oxidation of MnO2 precursors cross-linked by glucose networks is proposed that is supported by experimental results. The electrochemical studies showed that MN--MnO2 exhibits good electrochemical properties in 1 M Na2SO4 due to its high specific surface area (ca. 220 m(2)g(-1)) and proper pore size distributions (ca. 5 nm), which indicates that it has potential for use as a high-performance supercapacitor due to its good electrochemical performance, low cost and environmental friendliness.
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