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Water-mediated cation intercalation of open-framework indium hexacyanoferrate with high voltage and fast kinetics

Author

Listed:
  • Liang Chen

    (Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences)

  • Hezhu Shao

    (Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences)

  • Xufeng Zhou

    (Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences)

  • Guoqiang Liu

    (Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences)

  • Jun Jiang

    (Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences)

  • Zhaoping Liu

    (Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences)

Abstract

Rechargeable aqueous metal-ion batteries made from non-flammable and low-cost materials offer promising opportunities in large-scale utility grid applications, yet low voltage and energy output, as well as limited cycle life remain critical drawbacks in their electrochemical operation. Here we develop a series of high-voltage aqueous metal-ion batteries based on ‘M+/N+-dual shuttles’ to overcome these drawbacks. They utilize open-framework indium hexacyanoferrates as cathode materials, and TiP2O7 and NaTi2(PO4)3 as anode materials, respectively. All of them possess strong rate capability as ultra-capacitors. Through multiple characterization techniques combined with ab initio calculations, water-mediated cation intercalation of indium hexacyanoferrate is unveiled. Water is supposed to be co-inserted with Li+ or Na+, which evidently raises the intercalation voltage and reduces diffusion kinetics. As for K+, water is not involved in the intercalation because of the channel space limitation.

Suggested Citation

  • Liang Chen & Hezhu Shao & Xufeng Zhou & Guoqiang Liu & Jun Jiang & Zhaoping Liu, 2016. "Water-mediated cation intercalation of open-framework indium hexacyanoferrate with high voltage and fast kinetics," Nature Communications, Nature, vol. 7(1), pages 1-10, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11982
    DOI: 10.1038/ncomms11982
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