Xi Zhenjie, Sun Qing, Li Jing, Qiao Ying, Min Guanghui, Ci Lijie
State Key Laboratory of Advanced Welding and Joining, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan 250061, China.
Molecules. 2024 Feb 29;29(5):1064. doi: 10.3390/molecules29051064.
Li-rich manganese-based oxide (LRMO) cathode materials are considered to be one of the most promising candidates for next-generation lithium-ion batteries (LIBs) because of their high specific capacity (250 mAh g) and low cost. However, the inevitable irreversible structural transformation during cycling leads to large irreversible capacity loss, poor rate performance, energy decay, voltage decay, etc. Based on the recent research into LRMO for LIBs, this review highlights the research progress of LRMO in terms of crystal structure, charging/discharging mechanism investigations, and the prospects of the solution of current key problems. Meanwhile, this review summarizes the specific modification strategies and their merits and demerits, i.e., surface coating, elemental doping, micro/nano structural design, introduction of high entropy, etc. Further, the future development trend and business prospect of LRMO are presented and discussed, which may inspire researchers to create more opportunities and new ideas for the future development of LRMO for LIBs with high energy density and an extended lifespan.
富锂锰基氧化物（LRMO）正极材料因其高比容量（250 mAh g）和低成本，被认为是下一代锂离子电池（LIB）最有前景的候选材料之一。然而，循环过程中不可避免的不可逆结构转变会导致大量不可逆容量损失、倍率性能差、能量衰减、电压衰减等问题。基于近期对用于LIB的LRMO的研究，本综述重点介绍了LRMO在晶体结构、充放电机制研究方面的进展以及解决当前关键问题的前景。同时，本综述总结了具体的改性策略及其优缺点，即表面包覆、元素掺杂、微/纳米结构设计、引入高熵等。此外，还介绍并讨论了LRMO的未来发展趋势和商业前景，这可能会激发研究人员为具有高能量密度和长寿命的用于LIB的LRMO的未来发展创造更多机会和新思路。
