NDLI: High–rate electrochemical capacitors from highly graphitic carbon–tipped manganese oxide/mesoporous carbon/manganese oxide hybrid nanowires

Content Provider	Royal Society of Chemistry (RSC)
Author	Li, Chunzhong Yan, Chaoyi Lee, Pooi See Jiang, Hao Yang, Liping Ma, Jan
Copyright Year	2011
Abstract	In this paper, using manganese oxide as an example, we report the successful design and synthesis of a novel one-dimensional highly graphitic carbon-tipped manganese oxide/mesoporous carbon/manganese oxide hybrid nanowire. The unique structure significantly improves the conductivity of metal oxide materials, which is a key limitation in pseudocapacitors. The hybrid nanowire with optimal carbon content, when applied as an electrode, exhibits superior capacitive properties in 1 M Na2SO4 aqueous solution, such as high specific capacitance (266 F g−1 at 1 A g−1), excellent rate capability (56.4% capacity retention at 60 A g−1) and outstanding cycling stability (without degradation after 1200 cycles). The energy densities achieved can be as high as 20.8 W h kg−1, at a power density of 30 kW kg−1. The results demonstrated that the manganese oxide in our hybrid nanomaterial was efficiently utilized with the assistance of the highly conductive graphitic carbon-tipped mesoporous carbon shell. It is reckoned that the present low-cost novel hybrid nanowire can serve as a promising electrode material for supercapacitors and other electrochemical devices.
Starting Page	1813
Ending Page	1819
Page Count	7
File Format	HTM / HTML PDF
ISSN	17545692
Volume Number	4
Issue Number	5
Journal	Energy & Environmental Science
DOI	10.1039/c1ee01032h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Manganese oxide Mesoporous material Carbon Nanowire Electrode Capacitance Electrochemistry
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Renewable Energy, Sustainability and the Environment Nuclear Energy and Engineering

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