@article{35921,
  author = {Ji Qian and Yang Ha and Krishna Prasad Koirala and Di Huang and Zhi Huang and Vincent S Battaglia and Chongmin Wang and Wanli Yang and Wei Tong},
  title = {Toward Stable Cycling of a Cost‐Effective Cation‐Disordered Rocksalt Cathode via Fluorination},
  abstract = {<p><span>The recently developed Li-excess cation-disordered rock salts (DRXs) exhibit an excellent chemical diversity for the development of alternative Co/Ni-free high-energy cathodes. Herein, the synthesis of a highly fluorinated DRX cathode, Li</span><sub><span>1.2</span></sub><span>Mn</span><sub><span>0.6</span></sub><span>Ti</span><sub><span>0.2</span></sub><span>O</span><sub><span>1.8</span></sub><span>F</span><sub><span>0.2</span></sub><span>, based on cost-effective and earth-abundant transition metals, via a solid-state reaction, is reported. The fluorinated DRX cathode using ammonium fluoride precursor exhibits more uniform particle size and delivers a specific discharge capacity of 233&nbsp;mAh&nbsp;g</span><sup><span>−1</span></sup><span>&nbsp;and specific energy of 754&nbsp;Wh&nbsp;kg</span><sup><span>−1</span></sup><span>, with 206&nbsp;mAh&nbsp;g</span><sup><span>−1</span></sup><span>&nbsp;retained after 200 cycles. The combined synchrotron X-ray absorption spectroscopy and resonant inelastic X-ray scattering spectroscopy analysis reveals that the remarkable cycling performance is attributed to the high fluorination and thus enhanced Mn content, enabling the utilization of more Mn redox than the oxide analog. This study demonstrates a great promise to develop next-generation cost-effective DRX cathodes with enhanced capacity retention for high-energy Li-ion batteries.</span></p>},
  year = {2023},
  journal = {Advanced Functional Materials},
  volume = {33},
  month = {05/2023},
  issn = {1616-301X},
  url = {https://onlinelibrary.wiley.com/toc/16163028/33/22},
  doi = {10.1002/adfm.202205972},
  language = {eng},
}