Journal
APPLIED PHYSICS LETTERS
Volume 104, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4864285
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Funding
- European Research Council Grant (ThreeDSurface)
- BMBF (ZIK: 3DNanoDevice)
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In this Letter, an innovative technique is reported to control the fabrication of free-standing MnO2 nanotube and nanowire arrays. The synthesis is based on a three-step process, using porous anodic aluminum oxide as a template, and enables the selective fabrication of vertically aligned MnO2 nanotubes or nanowires on large areas. The as-prepared MnO2 nanotube and nanowire arrays are investigated as electrode materials for supercapacitor applications and show a good electrochemical performance with specific capacitances of 210 Fg(-1) at 1.9 Ag-1 and 231 Fg(-1) at 0.5 Ag-1, respectively. The investigation of the rate capability of both structures indicates a superior performance of the nanotube arrays. (C) 2014 AIP Publishing LLC.
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