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The stability of P2-layered sodium transition metal oxides in ambient atmospheres

Author

Listed:
  • Wenhua Zuo

    (Xiamen University)

  • Jimin Qiu

    (Xiamen University)

  • Xiangsi Liu

    (Xiamen University)

  • Fucheng Ren

    (Xiamen University)

  • Haodong Liu

    (University of California San Diego)

  • Huajin He

    (Xiamen University)

  • Chong Luo

    (Xiamen University, Xiamen)

  • Jialin Li

    (Xiamen University)

  • Gregorio F. Ortiz

    (Xiamen University
    Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie)

  • Huanan Duan

    (Shanghai Jiao Tong University)

  • Jinping Liu

    (Wuhan University of Technology)

  • Ming-Sheng Wang

    (Xiamen University, Xiamen)

  • Yangxing Li
  • Riqiang Fu

    (National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive)

  • Yong Yang

    (Xiamen University
    Xiamen University)

Abstract

Air-stability is one of the most important considerations for the practical application of electrode materials in energy-harvesting/storage devices, ranging from solar cells to rechargeable batteries. The promising P2-layered sodium transition metal oxides (P2-NaxTmO2) often suffer from structural/chemical transformations when contacted with moist air. However, these elaborate transitions and the evaluation rules towards air-stable P2-NaxTmO2 have not yet been clearly elucidated. Herein, taking P2-Na0.67MnO2 and P2-Na0.67Ni0.33Mn0.67O2 as key examples, we unveil the comprehensive structural/chemical degradation mechanisms of P2-NaxTmO2 in different ambient atmospheres by using various microscopic/spectroscopic characterizations and first-principle calculations. The extent of bulk structural/chemical transformation of P2-NaxTmO2 is determined by the amount of extracted Na+, which is mainly compensated by Na+/H+ exchange. By expanding our study to a series of Mn-based oxides, we reveal that the air-stability of P2-NaxTmO2 is highly related to their oxidation features in the first charge process and further propose a practical evaluating rule associated with redox couples for air-stable NaxTmO2 cathodes.

Suggested Citation

  • Wenhua Zuo & Jimin Qiu & Xiangsi Liu & Fucheng Ren & Haodong Liu & Huajin He & Chong Luo & Jialin Li & Gregorio F. Ortiz & Huanan Duan & Jinping Liu & Ming-Sheng Wang & Yangxing Li & Riqiang Fu & Yong, 2020. "The stability of P2-layered sodium transition metal oxides in ambient atmospheres," Nature Communications, Nature, vol. 11(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17290-6
    DOI: 10.1038/s41467-020-17290-6
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    References listed on IDEAS

    as
    1. Shaohua Guo & Qi Li & Pan Liu & Mingwei Chen & Haoshen Zhou, 2017. "Environmentally stable interface of layered oxide cathodes for sodium-ion batteries," Nature Communications, Nature, vol. 8(1), pages 1-9, December.
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