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Keywords:

  • Iron-based fluoride;
  • Cathode;
  • Ionic liquid;
  • Lithium batteries
Thumbnail image of graphical abstract

A mesoporous iron-based fluoride cathode for lithium batteries is fabricated by a novel low-temperature non-aqueous synthesis based on ionic liquid medium. The hydration-water-induced microstructural optimization and morphological decoration are expected to contribute positively to both the large reversible Li-storage capacity and the high reactive voltage of carbon-free FeF3 · 0.33H2O at room temperature.