Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 118, Issue 2-3, Pages 303-307Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2009.07.057
Keywords
Nanostructures; Oxides; Chemical synthesis; Electrochemical properties
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Funding
- National Natural Science Foundation of China [50572104, 50777062]
- CAS
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A microwave-assisted emulsion process has been developed to synthesize birnessite-type MnO2 one-dimensional (1D) nanostructures. The prepared samples were characterized by X-ray diffraction (XRD). field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). TEM images confirmed that the particles were composed of nanowires and nanobelts. As a consequence of the small size, such MnO2 nanostructures exhibit a high specific capacitance of 277 Fg(-1) at the current density of 0.2 mA cm(-2). Furthermore, the simple synthetic approach may provide a convenient route for the preparation of birnessite-type MnO2 nanowires and other 1D nanostructured materials on a large scale. (C) 2009 Published by Elsevier B.V.
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