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Title: Controlled synthesis of manganese oxyhydroxide nanotubes : implications for high-efficiency supercapacitors
Authors: Shi, Wenhui
Xu, Chen
Yu, Hong
Tan, Hui Teng
Rui, Xianhong
Hoster, Harry E.
Yan, Qingyu
Keywords: DRNTU::Engineering::Materials::Nanostructured materials
DRNTU::Science::Chemistry::Inorganic chemistry::Synthesis
Issue Date: 2013
Source: Tan, H. T., Rui, X., Shi, W., Xu, C., Yu, H., Hoster, H. E., et al. (2013). Controlled Synthesis of Manganese Oxyhydroxide Nanotubes: Implications for High-Efficiency Supercapacitors. ChemPlusChem, 78(6), 554-560.
Series/Report no.: Chempluschem
Abstract: Successful attempts have been made to control the synthesis of tubular MnOOH with nanodimensions on high electronic conductivity graphite felt (GF) to be used as a flexible supercapacitor electrode. As a fundamental study, the time-dependent kinetics was investigated to interpret its formation mechanism, which can be depicted as the curling of a two-dimensional precursor into a one-dimensional structure with a hollow interior. As a result of the nanotube structure, the active surface area of MnOOH is completely accessible to electrolyte ions and has a shorter charge-transport length and greater ability to withstand structural deformation. Hence, hollow-structured MnOOH shows great promise as an electrochemical system, which is reflected in its high specific capacitance of 1156 F g−1 at 1 A g−1. Furthermore, the high energy density of 1125 W h kg−1 and power density of 5.05 kW kg−1 reveal the outstanding energy-storage behavior of the MnOOH/GF composites as flexible supercapacitor electrodes.
ISSN: 2192-6506
DOI: 10.1002/cplu.201300095
Rights: © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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