Voltage Decay and Capacity Loss in Lithium‐Rich Manganese Oxide Cathodes: Atomic Origins, Mesoscopic Heterogeneities, and Macroscopic Evolution

Lithium-rich manganese-based oxide (LRMO) cathode materials have emerged as promising candidates for next-generation lithium-ion batteries (LIBs) due to their high specific capacity and exceptional energy density. Nevertheless, their practical application is significantly hindered by pronounced voltage decay and capacity loss during cycling, which stem from complex and interrelated mechanisms. This review presents a comprehensive, multi-scale analysis of the degradation pathways in LRMO materials, spanning from atomic-level structural dynamics to mesoscopic heterogeneities and macroscopic particle evolution. Special focus is directed toward unraveling the synergistic interplay between oxygen anionic and…

• NN
  National Natural Science Foundation of China

  Awards: 92472124, 22402157, 22278329
• CP
  China Postdoctoral Science Foundation

  Award: 2024M752553
• NS
  Natural Science Basic Research Program of Shaanxi Province

  Award: 2022TD‐27