Please use this identifier to cite or link to this item: http://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
RMID: 0030028231
DOI: 10.1039/c5ta00634a
Grant ID: http://purl.org/au-research/grants/arc/FT110100711
Appears in Collections:IPAS publications

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