Nano-Micro Letters (Dec 2023)

Enhanced Redox Electrocatalysis in High-Entropy Perovskite Fluorides by Tailoring d–p Hybridization

  • Xudong Li,
  • Zhuomin Qiang,
  • Guokang Han,
  • Shuyun Guan,
  • Yang Zhao,
  • Shuaifeng Lou,
  • Yongming Zhu

DOI
https://doi.org/10.1007/s40820-023-01275-3
Journal volume & issue
Vol. 16, no. 1
pp. 1 – 18

Abstract

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Highlights The tailored KCoMnNiMgZnF3-HEC cathode delivers extremely high discharge capacity (22,104 mAh g−1), outstanding long-term cyclability (over 500 h), preceding majority of traditional catalysts reported. Entropy effect of multiple sites in KCoMnNiMgZnF3-HEC engenders appropriate regulation of 3d orbital structure, leading to a moderate hybridization with the p orbital of key intermediate. The homogeneous nucleation of Li2O2 is achieved on multiple cation site, contributing to effective mass transfer at the three-phase interface, and thus, the reversibility of O2/Li2O2 conversion.

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