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https://hdl.handle.net/2440/92489
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Type: | Journal article |
Title: | MnO₂ nanostructures with three-dimensional (3D) morphology replicated from diatoms for high-performance supercapacitors |
Other Titles: | MnO(2) nanostructures with three-dimensional (3D) morphology replicated from diatoms for high-performance supercapacitors |
Author: | Li, F. Xing, Y. Huang, M. Li, K. Yu, T. Zhang, Y. Losic, D. |
Citation: | Journal of Materials Chemistry A, 2015; 3(15):7855-7861 |
Publisher: | Royal Society of Chemistry |
Issue Date: | 2015 |
ISSN: | 2050-7488 2050-7496 |
Statement of Responsibility: | Fei Li, Yuan Xing, Ming Huang, Kai Lin Li, Ting Ting Yu, Yu Xin Zhang and Dusan Losic |
Abstract: | Herein, we demonstrate the synthesis of size- and shape-controlled MnO2 nanostructures by replica molding from diatom silica structures for high-performance supercapacitors. Three types of hierarchical hollow MnO2 patterns with different three-dimensional (3D) structures, shapes and large surface areas were successfully prepared from three diatom species by a template-assisted hydrothermal process. The extraordinary precision and nano-scale resolution of 3D replications of complex biological architecture from diatoms to artificial MnO2 structures are confirmed. Detailed electrochemical measurements reveal that the Melosira-type MnO2 pattern exhibits not only a high specific capacitance of 371.2 F g−1 at a scan rate of 0.5 A g−1, but also relatively good cycle stability (93.1% capacitance retention after 2000 cycles at a scan rate of 5 A g−1), demonstrating a promising application as supercapacitor electrode materials. |
Description: | First published online 25 Feb 2015 |
Rights: | This journal is © The Royal Society of Chemistry 2015 |
DOI: | 10.1039/c5ta00634a |
Grant ID: | http://purl.org/au-research/grants/arc/FT110100711 |
Published version: | http://dx.doi.org/10.1039/c5ta00634a |
Appears in Collections: | Aurora harvest 2 IPAS publications |
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