@article{35914,
  author = {Jianping Huang and Peichen Zhong and Yang Ha and Deok-Hwang Kwon and Matthew J Crafton and Yaosen Tian and Mahalingam Balasubramanian and Bryan D McCloskey and Wanli Yang and Gerbrand Ceder},
  title = {Non-topotactic reactions enable high rate capability in Li-rich cathode materials},
  abstract = {<p><span>High-rate cathode materials for Li-ion batteries require fast Li transport kinetics, which typically rely on topotactic Li intercalation/de-intercalation because it minimally disrupts Li transport pathways. In contrast to this conventional view, here we demonstrate that the rate capability in a Li-rich cation-disordered rocksalt cathode can be significantly improved when the topotactic reaction is replaced by a non-topotactic reaction. The fast non-topotactic lithiation reaction is enabled by facile and reversible transition metal octahedral-to-tetrahedral migration, which improves rather than impedes Li transport. Using this concept, we show that high-rate performance can be achieved in Mn- and Ni-based cation-disordered rocksalt materials when some of the transition metal content can reversibly switch between octahedral and tetrahedral sites. This study provides a new perspective on the design of high-performance cathode materials by demonstrating how the interplay between Li and transition metal migration in materials can be conducive to fast non-topotactic Li intercalation/de-intercalations.</span></p>},
  year = {2021},
  journal = {Nature Energy},
  volume = {6},
  pages = {706 - 714},
  month = {07/2021},
  url = {https://www.nature.com/articles/s41560-021-00817-6},
  doi = {10.1038/s41560-021-00817-6},
  language = {eng},
}