Crystal Structures and Electrode Performance of Alpha-NaFeO2 for Rechargeable Sodium Batteries

@article{Yabuuchi2012CrystalSA,
  title={Crystal Structures and Electrode Performance of Alpha-NaFeO2 for Rechargeable Sodium Batteries},
  author={N. Yabuuchi and Hiroaki Yoshida and S. Komaba},
  journal={Electrochemistry},
  year={2012},
  volume={80},
  pages={716-719}
}
Single phase, well-crystallized O3-type NaFeO2 (alpha NaFeO2) is prepared by a solid-state method. Electrode performance of O3-type NaFeO2 is examined as positive electrode materials for rechargeable sodium batteries. O3type NaFeO2 can deliver 80–100mAhg−1 of reversible capacity with a nearly flat voltage profile at approximately 3.3V vs. Na metal. The electrode performance is significantly deteriorated by oxidation beyond x > 0.5 in Na1−xFeO2. X-ray diffraction study reveals that loss of… Expand

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