Li-rich Mn-based layered oxide cathodes (LLOs), delivering high specific capacity of >300 mAh g⁻¹ and maximum energy density of >1000 Wh kg⁻¹, are deemed to be one of the most promising cathode candidates for next-generation lithium-ion batteries over 350 Wh kg⁻¹ at the full cell level. However, the practical application of LLOs is still hindered by two main challenges: microcosmic material drawbacks (structural instability, poor diffusion kinetics, etc.) and thus induced macroscopic decay of electrochemical performance (low initial Coulombic efficiency, fast capacity/voltage decay, etc.). In this review, we summarize the current developments of LLOs in the structure, corresponding reaction mechanisms, and electrochemical performances, discuss the relationship between inherent material drawbacks and external performance decay, as well as summarize the performance degradation mechanisms and addressing strategies to provide guidance and perspectives for future LLOs research.

富锂的锰基层状氧化物阴极（LLO）具有> 300 mAh g ^-1的高比容量和> 1000 Wh kg ^-1的最大能量密度，被认为是下一个最有希望的阴极候选材料之一。超过350 Wh kg ^-1的新一代锂离子电池在完整的单元格级别 但是，LLO的实际应用仍然受到两个主要挑战的阻碍：微观材料的缺陷（结构不稳定性，不良的扩散动力学等），从而导致电化学性能的宏观衰减（初始库仑效率低，容量/电压衰减快等）。 ）。在这篇综述中，我们总结了LLO在结构，相应的反应机理和电化学性能方面的最新发展，讨论了固有的材料缺陷与外部性能下降之间的关系，并总结了性能下降的机理和解决策略以提供指导和指导。未来LLO研究的观点。