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A nanocomposite of CoO and a mesoporous carbon (CMK-3) has been studied as a cathode catalyst for lithium-oxygen batteries in alkyl carbonate electrolytes. The morphology and structure of the as-prepared nanocomposite were characterized by field emission scanning electron microscopy, transmission electron microscopy and high resolution transmission electron microscopy. The electrochemical properties of the mesoporous CoO/CMK-3 nanocomposite as a cathode catalyst in lithium-oxygen batteries were studied using galvanostatic charge-discharge methods. The reaction products on the cathode were analyzed by Fourier transform infrared spectroscopy. The CoO/CMK-3 nanocomposite exhibited better capacity retention than bare mesoporous CMK-3 carbon, Super-P carbon or CoO/Super-P nanocomposite. The synergistic effects arising from the combination of CoO nanoparticles and the mesoporous carbon nanoarchitecture may be responsible for the optimum catalytic performance in lithium-oxygen batteries.


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Nanocomposites of CoO and a Mesoporous Carbon (CMK-3) as a High Performance Cathode Catalyst for Lithium-Oxygen Batteries

Show Author's information Bing Sun1Hao Liu1Paul Munroe2Hyojun Ahn3Guoxiu Wang1( )
Centre for Clean Energy Technology School of Chemistry and Forensic Science, University of TechnologySydneyNSW 2007 Australia
Electron Microscope Unit, The University of New South WalesSydneyNSW 2052 Australia
School of Materials Science and Engineering, Gyeongsang National University, 900 Gazwa-dongyJinju, Gyeongnam 660-701 Republic of Korea

Abstract

A nanocomposite of CoO and a mesoporous carbon (CMK-3) has been studied as a cathode catalyst for lithium-oxygen batteries in alkyl carbonate electrolytes. The morphology and structure of the as-prepared nanocomposite were characterized by field emission scanning electron microscopy, transmission electron microscopy and high resolution transmission electron microscopy. The electrochemical properties of the mesoporous CoO/CMK-3 nanocomposite as a cathode catalyst in lithium-oxygen batteries were studied using galvanostatic charge-discharge methods. The reaction products on the cathode were analyzed by Fourier transform infrared spectroscopy. The CoO/CMK-3 nanocomposite exhibited better capacity retention than bare mesoporous CMK-3 carbon, Super-P carbon or CoO/Super-P nanocomposite. The synergistic effects arising from the combination of CoO nanoparticles and the mesoporous carbon nanoarchitecture may be responsible for the optimum catalytic performance in lithium-oxygen batteries.

Keywords: catalyst, CMK-3, CoO, Mesoporous carbon, Lithium-oxygen battery

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Publication history
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Acknowledgements

Publication history

Received: 22 March 2012
Revised: 10 May 2012
Accepted: 15 May 2012
Published: 13 June 2012
Issue date: July 2012

Copyright

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2012

Acknowledgements

Acknowledgements

This project was financially supported by the Australian Research Council (ARC) through the ARC Discovery project (DP1093855), ARC FT project (FT110100800), and the National Research Foundation of Korea through the WCU (World Class University) program (R32-2008-000-20093-0). We also acknowledge the support from the 3rd Aus-China Symposium for Materials Science.

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