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Synthesis of layered LiMnO2 byin situ oxidation-intercalation and a study of the reaction mechanism and electrochemical performance

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Chinese Science Bulletin

Abstract

Using Mn(OH)2 as precursor, LiOH as lithiating agent and (NH4)2S2O8 as oxidant, layeredo-LiMnO2 was obtained by a novel method—in situ oxidation-intercalation under mild conditions (80 °C). The product was characterized by XRD, ICP, TEM and7Li-NMR. The results reveal that orthorhombic LiMnO2 with high purity and good crystallinity can be obtained by this method. During electrochemical tests, a LiMnO2/Li cell shows an initial reversible capacity of 208 mAh · g−1 and a reversible capacity of 180 mAh · g−1 after 30 cycles at room temperature.

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Authors and Affiliations

  1. Key Laboratory of Science and Technology of Controllable Chemical Reactions, Ministry of Education, Beijing University of Chemical Technology, 100029, Beijing, China

    Xiaodan Li, Wensheng Yang, D. G. Evans & Xue Duan

Authors
  1. Xiaodan Li
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  2. Wensheng Yang
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  3. D. G. Evans
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  4. Xue Duan
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Correspondence to Xue Duan.

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Li, X., Yang, W., Evans, D.G. et al. Synthesis of layered LiMnO2 byin situ oxidation-intercalation and a study of the reaction mechanism and electrochemical performance. Chin.Sci.Bull. 50, 213–214 (2005). https://doi.org/10.1007/BF02897529

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  • DOI: https://doi.org/10.1007/BF02897529

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