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Research Article

Hierarchical Co3O4 porous nanowires as an efficient bifunctional cathode catalyst for long life Li-O2 batteries

Qingchao Liu1,2, Yinshan Jiang2, Jijing Xu1, Dan Xu1, Zhiwen Chang1,3, Yanbin Yin1,2, Wanqiang Liu4, Xinbo Zhang1 ( )
State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China
School of Materials Science and EngineeringJilin UniversityChangchun130012China
Graduate University of Chinese Academy of SciencesBeijing100049China
School of Materials Science and EngineeringChangchun University of Science and TechnologyChangchun130022China
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Abstract

Hierarchical Co3O4 porous nanowires (NWs) have been synthesized using a hydrothermal method followed by calcination. When employed as a cathode catalyst in non-aqueous Li-oxygen batteries, the Co3O4 NWs effectively improve both the round-trip efficiency and cycling stability, which can be attributed to the high catalytic activities of Co3O4 NWs for the oxygen reduction reaction and the oxygen evolution reaction during discharge and charge processes, respectively.

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Keywords

lithium-oxygen batteriesbifunctional cathode catalystCo3O4 nanowirescycling stability

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Nano Research
Volume 8 Issue 2,
February 2015
Pages 576-583
DOI: 10.1007/s12274-014-0689-3

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Cite this article:
Liu Q, Jiang Y, Xu J, et al. Hierarchical Co3O4 porous nanowires as an efficient bifunctional cathode catalyst for long life Li-O2 batteries. Nano Research, 2015, 8(2): 576-583. https://doi.org/10.1007/s12274-014-0689-3

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Received: 09 September 2014
Revised: 09 December 2014
Accepted: 10 December 2014
Published: 29 December 2014
© Tsinghua University Press and Springer‐Verlag Berlin Heidelberg 2014