A comprehensive understanding on the anionic redox chemistry of high-voltage cathode materials for high-energy-density lithium-ion batteries

(LCO), Ni-rich oxides and Li-rich cathodes, mainly because of their potential to deliver high capacities when operating at high voltages. However, the elevated operating voltage turns out to be a double-sided sword for these materials as achieving high specific capacity is always accompanied by the oxygen redox process, which shows unsatisfactory reversibility and has a significant impact on their structure stability and electrochemical performance. Consequently, understanding the failure mechanism of anionic redox chemistry and finding solutions to this issue are crucial for realizing the practical application of these high-voltage materials. Although many studies have been reported on the anionic redox…

• NN
  National Natural Science Foundation of China

  Awards: 52372211, 52371225
• GS
  Guangdong Science and Technology Department

  Award: 2021QN020687
• ST
  Science, Technology and Innovation Commission of Shenzhen Municipality

  Award: JCYJ20230807112503007