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Rechargeable lithium-oxygen (Li-O2) batteries have received intensive research interest due to its ultrahigh energy density, while its cycle stability is still hindered by the high reactivity of the Li anode with oxygen and moisture. To alleviate the corrosion of the metallic lithium anodes for achieving a stable Li-O2 battery, and as a proof-of-concept experiment, a distinctive hybrid electrolyte system with an organic/ceramic/organic electrolyte (OCOE) architecture is designed. Importantly, the cycle number of Li-O2 batteries with OCOE is significantly improved compared with batteries with an organic electrolyte (OE). This might be attributed to the effective suppression of the lithium anode corrosion caused by the OE degradation and the crossover of oxygen from the cathode. We consider that our facile, low-cost, and highly effective lithium protection strategy presents a new avenue to address the daunting corrosion problem of lithium metal anodes in Li-O2 batteries. In addition, the proposed strategy can be easily extended to other metal-O2 battery systems, such as Na-O2 batteries.


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Hybrid electrolyte with robust garnet-ceramic electrolyte for lithium anode protection in lithium-oxygen batteries

Show Author's information Jin Wang1,2Yanbin Yin1,2Tong Liu1Xiaoyang Yang1,2Zhiwen Chang1,3Xinbo Zhang1( )
State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China
Key Laboratory of Automobile MaterialsMinistry of Education and College of Materials Science and EngineeringJilin UniversityChangchun130012China
University of Chinese Academy of SciencesBeijing100049China

Abstract

Rechargeable lithium-oxygen (Li-O2) batteries have received intensive research interest due to its ultrahigh energy density, while its cycle stability is still hindered by the high reactivity of the Li anode with oxygen and moisture. To alleviate the corrosion of the metallic lithium anodes for achieving a stable Li-O2 battery, and as a proof-of-concept experiment, a distinctive hybrid electrolyte system with an organic/ceramic/organic electrolyte (OCOE) architecture is designed. Importantly, the cycle number of Li-O2 batteries with OCOE is significantly improved compared with batteries with an organic electrolyte (OE). This might be attributed to the effective suppression of the lithium anode corrosion caused by the OE degradation and the crossover of oxygen from the cathode. We consider that our facile, low-cost, and highly effective lithium protection strategy presents a new avenue to address the daunting corrosion problem of lithium metal anodes in Li-O2 batteries. In addition, the proposed strategy can be easily extended to other metal-O2 battery systems, such as Na-O2 batteries.

Keywords: stability, Li-O2 battery, Li anode protection, hybrid electrolyte, garnet ceramic

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Publication history
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Acknowledgements

Publication history

Received: 14 October 2017
Revised: 04 December 2017
Accepted: 23 December 2017
Published: 22 May 2018
Issue date: June 2018

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Acknowledgements

Acknowledgements

This work was financially supported by the National Key R & D Program of China (Nos. 2017YFA0206700 and 2016YFB0100100), the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDA09010404), and the Technology and Industry for National Defence of the People's Republic of China (No. JCKY2016130B010).

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