Ye Zhengcheng, Qiu Lang, Yang Wen, Wu Zhenguo, Liu Yuxia, Wang Gongke, Song Yang, Zhong Benhe, Guo Xiaodong
Department of Chemical Engineering, University of Sichuan, Chengdu, 610065, P. R. China.
Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165, P. R. China.
Chemistry. 2021 Mar 1;27(13):4249-4269. doi: 10.1002/chem.202003987. Epub 2021 Jan 18.
Nickel-rich layered transition metal oxides are considered as promising cathode candidates to construct next-generation lithium-ion batteries to satisfy the demands of electrical vehicles, because of the high energy density, low cost, and environment friendliness. However, some problems related to rate capability, structure stability, and safety still hamper their commercial application. In this Review, beginning with the relationships between the physicochemical properties and electrochemical performance, the underlying mechanisms of the capacity/voltage fade and the unstable structure of Ni-rich cathodes are deeply analyzed. Furthermore, the recent research progress of Ni-rich oxide cathode materials through element doping, surface modification, and structure tuning are summarized. Finally, this review concludes by discussing new insights to expand the field of Ni-rich oxides and promote practical applications.
富镍层状过渡金属氧化物因其高能量密度、低成本和环境友好性，被认为是构建下一代锂离子电池以满足电动汽车需求的有前途的阴极候选材料。然而，一些与倍率性能、结构稳定性和安全性相关的问题仍然阻碍着它们的商业应用。在本综述中，从物理化学性质与电化学性能之间的关系入手，深入分析了富镍阴极容量/电压衰减和结构不稳定的潜在机制。此外，总结了通过元素掺杂、表面改性和结构调整对富镍氧化物阴极材料的最新研究进展。最后，本综述通过讨论新的见解来拓展富镍氧化物领域并促进实际应用进行总结。
