Nature Communications (Oct 2020)

Inhibition of oxygen dimerization by local symmetry tuning in Li-rich layered oxides for improved stability

  • Fanghua Ning,
  • Biao Li,
  • Jin Song,
  • Yuxuan Zuo,
  • Huaifang Shang,
  • Zimeng Zhao,
  • Zhen Yu,
  • Wangsheng Chu,
  • Kun Zhang,
  • Guang Feng,
  • Xiayan Wang,
  • Dingguo Xia

DOI
https://doi.org/10.1038/s41467-020-18423-7
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 12

Abstract

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Li-rich layered oxide cathodes show high capacities in Li-ion batteries but suffer from structural degradation via O–O dimerization. Here, the authors present local-symmetry-tuned Li2RuO3 with oxygen redox involving a telescopic O–Ru–O configuration avoiding O2 release, enhancing cycling stability.