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Keywords:

  • sodium-ion batteries;
  • Na4Fe(CN)6/C composites;
  • cathode materials;
  • electric storage batteries;
  • energy storage
Thumbnail image of graphical abstract

A Na4Fe(CN)6/C nanocomposite prepared simply by ball-milling Na4Fe(CN)6 with carbon powder displays a full utilization of its one-electron redox capacity, excellent cyclability, and high rate capability as a Na-storage cathode, offering a promising possibility to develop environmentally benign and low-cost Na ion batteries for large-scale electric storage applications.