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A High-Capacity, Low-Cost Layered Sodium Manganese Oxide Material as Cathode for Sodium-Ion Batteries

Authors

  • Shaohua Guo,

    1. Energy Technology Research Institute, National Institute of Advanced industrial Science and Technology (AIST), AIST Tsukuba Central 2, Tsukuba, Ibaraki 305-8568 (Japan), Fax: (+81) 29-861-3489
    2. Graduate School of System and Information Engineering, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, 305-8573 (Japan)
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  • Dr. Haijun Yu,

    Corresponding author
    1. Energy Technology Research Institute, National Institute of Advanced industrial Science and Technology (AIST), AIST Tsukuba Central 2, Tsukuba, Ibaraki 305-8568 (Japan), Fax: (+81) 29-861-3489
    • Energy Technology Research Institute, National Institute of Advanced industrial Science and Technology (AIST), AIST Tsukuba Central 2, Tsukuba, Ibaraki 305-8568 (Japan), Fax: (+81) 29-861-3489===

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  • Dr. Zelang Jian,

    1. Energy Technology Research Institute, National Institute of Advanced industrial Science and Technology (AIST), AIST Tsukuba Central 2, Tsukuba, Ibaraki 305-8568 (Japan), Fax: (+81) 29-861-3489
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  • Dr. Pan Liu,

    1. WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
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  • Dr. Yanbei Zhu,

    1. National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Umezono 1-1-1, Tsukuba, 305-8568 (Japan)
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  • Dr. Xianwei Guo,

    1. WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
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  • Prof. Mingwei Chen,

    1. WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
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  • Prof. Masayoshi Ishida,

    1. Graduate School of System and Information Engineering, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, 305-8573 (Japan)
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  • Prof. Haoshen Zhou

    Corresponding author
    1. Energy Technology Research Institute, National Institute of Advanced industrial Science and Technology (AIST), AIST Tsukuba Central 2, Tsukuba, Ibaraki 305-8568 (Japan), Fax: (+81) 29-861-3489
    2. Graduate School of System and Information Engineering, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, 305-8573 (Japan)
    3. National Laboratory of Solid State Microstructures & Department of Energy Science and Engineering, Nanjing University, Nanjing 210093 (PR China)
    • Energy Technology Research Institute, National Institute of Advanced industrial Science and Technology (AIST), AIST Tsukuba Central 2, Tsukuba, Ibaraki 305-8568 (Japan), Fax: (+81) 29-861-3489===

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Abstract

A layered sodium manganese oxide material (NaMn3O5) is introduced as a novel cathode materials for sodium-ion batteries. Structural characterizations reveal a typical Birnessite structure with lamellar stacking of the synthetic nanosheets. Electrochemical tests reveal a particularly large discharge capacity of 219 mAh g−1 in the voltage rang of 1.5–4.7 V vs. Na/Na+. With an average potential of 2.75 V versus sodium metal, layered NaMn3O5 exhibits a high energy density of 602 Wh kg−1, and also presents good rate capability. Furthermore, the diffusion coefficient of sodium ions in the layered NaMn3O5 electrode is investigated by using the galvanostatic intermittent titration technique. The results greatly contribute to the development of room-temperature sodium-ion batteries based on earth-abundant elements.

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