Unraveling the chemical and structural evolution of novel Li-rich layered/rocksalt intergrown cathode for Li-ion batteries

Yongjian Li, Xinyu Zhu, Chenxi Wei, Youyou Fang, Xinyu Wang, Yizhi Zhai, Wenlong Kang, Lai Chen, Duanyun Cao, Meng Wang, Yun Lu, Qing Huang, Yuefeng Su*, Hong Yuan, Ning Li, Feng Wu

*Corresponding author for this work

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Abstract

The prototype material, Li1.23Ru0.41Ni0.36O2, is proposed to gain the deep and comprehensive understanding of chemical and structural changes of the novel layered/rocksalt intergrown cathodes. Synchrotron-based X-ray absorption spectra and resonant inelastic X-ray scattering reveal that both cationic and anionic redox evolves in the charge compensation process of the intergrown material, while synchrotron-based extended X-ray fine structure spectra and in situ X-ray diffraction measurements demonstrates that the intergrown material undergoes minimal local- and long-range structural variations at deep de/lithiation. This work highlights the great potential of the intergrown structure to inspire the design of advanced cathode materials for lithium-ion batteries.

Original languageEnglish
Article number109536
JournalChinese Chemical Letters
Volume35
Issue number12
DOIs
Publication statusPublished - Dec 2024

Keywords

  • Cathode materials
  • Cationic-anionic redox
  • Intergrown structure
  • Low strain
  • Synchrotron characterizations

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Li, Y., Zhu, X., Wei, C., Fang, Y., Wang, X., Zhai, Y., Kang, W., Chen, L., Cao, D., Wang, M., Lu, Y., Huang, Q., Su, Y., Yuan, H., Li, N., & Wu, F. (2024). Unraveling the chemical and structural evolution of novel Li-rich layered/rocksalt intergrown cathode for Li-ion batteries. Chinese Chemical Letters, 35(12), Article 109536. https://doi.org/10.1016/j.cclet.2024.109536