Nature Communications (Feb 2023)

Phase-engineered cathode for super-stable potassium storage

  • Lichen Wu,
  • Hongwei Fu,
  • Shu Li,
  • Jian Zhu,
  • Jiang Zhou,
  • Apparao M. Rao,
  • Limei Cha,
  • Kunkun Guo,
  • Shuangchun Wen,
  • Bingan Lu

DOI
https://doi.org/10.1038/s41467-023-36385-4
Journal volume & issue
Vol. 14, no. 1
pp. 1 – 12

Abstract

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The large radius of potassium ions inevitably destabilizes the crystal structure of the cathode material in potassium-ion batteries, leading to capacity degradation. Here, authors demonstrate that phase-engineered amorphous vanadium oxide alleviates large volume variation and improves electrochemical behaviour.