Nature Communications (Mar 2020)

A fluoroxalate cathode material for potassium-ion batteries with ultra-long cyclability

  • Bifa Ji,
  • Wenjiao Yao,
  • Yongping Zheng,
  • Pinit Kidkhunthod,
  • Xiaolong Zhou,
  • Sarayut Tunmee,
  • Suchinda Sattayaporn,
  • Hui-Ming Cheng,
  • Haiyan He,
  • Yongbing Tang

DOI
https://doi.org/10.1038/s41467-020-15044-y
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 10

Abstract

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The abundance and low cost of potassium makes potassium batteries a promising technology for large scale energy storage. Here the authors apply a previously known frustrated magnet, KFeC2O4F, as the cathode in which the unique structure and Fe2+/Fe3+ redox enable excellent cycling stability.