Nickel-rich layered oxide cathode materials have high specific capacity and are environmentally-benign, hence they are considered as the most relevant next-generation positive-electrode materials for lithium-ion batteries, particularly for powering plug-in hybrid electric vehicles and battery electric vehicles. The rich nickel content in layered oxides is highly beneficial in improving the energy density, but the cycle ability, rate capability and thermal stability inevitably decrease with the increase of nickel percentage, leading to the gradual failure of lithium-ion batteries. Therefore, it is an essential requisite to give a thorough review of previous research, thereby providing a clear understanding of the relationships between the material structure and their electrochemical activities, and improving the electrochemical performances of nickel-rich layered oxide cathode materials through reasonable modifications. In this article, the structural characteristics and synthetic methods are systematically reviewed. Particularly, the capacity failure mechanism and the corresponding improvement strategies of nickel-rich layered oxides are emphasized and discussed from atomic scale to macro-scale along with the latest literature review. A brief analysis of the perspectives is also presented with several possible research directions for technical and commercial success of nickel-rich layered oxide cathodes.

富镍层状氧化物正极材料具有高比容量和环境友好性，因此被认为是与锂离子电池最相关的下一代正极材料，特别是为插电式混合动力汽车和电池电动汽车提供动力。车辆。层状氧化物中丰富的镍含量对提高能量密度非常有利，但随着镍含量的增加，循环能力、倍率性能和热稳定性不可避免地下降，导致锂离子电池逐渐失效。因此，彻底回顾以前的研究是必不可少的，从而清楚地了解材料结构与其电化学活性之间的关系，通过合理的改性提高富镍层状氧化物正极材料的电化学性能。本文对其结构特点和合成方法进行了系统综述。特别是，结合最新的文献综述，从原子尺度到宏观尺度强调和讨论了富镍层状氧化物的容量失效机制和相应的改进策略。还对这些观点进行了简要分析，并介绍了富镍层状氧化物阴极在技术和商业上取得成功的几个可能的研究方向。结合最新文献综述，从原子尺度到宏观尺度强调和讨论了富镍层状氧化物的容量失效机制和相应的改进策略。还对这些观点进行了简要分析，并介绍了富镍层状氧化物阴极在技术和商业上取得成功的几个可能的研究方向。结合最新文献综述，从原子尺度到宏观尺度强调和讨论了富镍层状氧化物的容量失效机制和相应的改进策略。还对这些观点进行了简要分析，并介绍了富镍层状氧化物阴极在技术和商业上取得成功的几个可能的研究方向。