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Nano-sized La0.8Sr0.2MnO3 as oxygen reduction catalyst in nonaqueous Li/O2 batteries

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Abstract

Nano-sized La0.8Sr0.2MnO3 prepared by the polyethylene glycol assisting sol–gel method was applied as oxygen reduction catalyst in nonaqueous Li/O2 batteries. The as-synthesized La0.8Sr0.2MnO3 was characterized by X-ray diffraction (XRD), scanning electron microscopy, and Brunauer–Emmet–Teller measurements. The XRD results indicate that the sample possesses a pure perovskite-type crystal structure, even sintered at a temperature as low as 600 °C, whereas for solid-state reaction method it can only be synthesized above 1,200 °C. The as-prepared nano-sized La0.8Sr0.2MnO3 has a specific surface area of 32 m2 g−1, which is much larger than the solid-state one (1 m2 g−1), and smaller particle size of about 100 nm. Electrochemical results show that the nano-sized La0.8Sr0.2MnO3 has better catalytic activity for oxygen reduction, higher discharge plateau and specific capacity.

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Acknowledgments

This work was financially supported by the Natural Science Foundation of China (20873032) and Science and Technology Commission of Shanghai Municipality (08DZ2270500).

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Authors and Affiliations

  1. Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, Fudan University, Shanghai, 200438, China

    Zhenghao Fu, Xiujing Lin, Tao Huang & Aishui Yu

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  1. Zhenghao Fu
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  2. Xiujing Lin
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  3. Tao Huang
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  4. Aishui Yu
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Correspondence to Aishui Yu.

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Fu, Z., Lin, X., Huang, T. et al. Nano-sized La0.8Sr0.2MnO3 as oxygen reduction catalyst in nonaqueous Li/O2 batteries. J Solid State Electrochem 16, 1447–1452 (2012). https://doi.org/10.1007/s10008-011-1467-8

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  • DOI: https://doi.org/10.1007/s10008-011-1467-8

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