Controlled synthesis of manganese oxyhydroxide nanotubes:implications for high-efficiency supercapacitors

Tan, Hui Teng and Rui, Xianhong and Shi, Wenhui and Xu, Chen and Yu, Hong and Hoster, Harry E. and Yan, Qingyu (2013) Controlled synthesis of manganese oxyhydroxide nanotubes:implications for high-efficiency supercapacitors. ChemPlusChem, 78 (6). pp. 554-560. ISSN 2192-6506

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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 1156Fg-1 at 1Ag-1. Furthermore, the high energy density of 1125Whkg-1 and power density of 5.05kWkg-1 reveal the outstanding energy-storage behavior of the MnOOH/GF composites as flexible supercapacitor electrodes.

Item Type:
Journal Article
Journal or Publication Title:
ChemPlusChem
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1600
Subjects:
ID Code:
72640
Deposited By:
Deposited On:
27 Jan 2015 11:38
Refereed?:
Yes
Published?:
Published
Last Modified:
13 May 2020 02:45