Extensive comparison of doping and coating strategies for Ni-rich positive electrode materials

Nickel-rich NMC (LiNi x Mn y Co 1−x−y O 2 , ⩾ 0.8) electrode materials are known for their great potential as lithium battery cathode active due to high capacities, low cost, and environment friendliness. However, these confront some technical challenges such structural, surface, electrochemical instability while different synthesis methods have large influences on morphology, structure, performance. This review summarizes the most common techniques which been employed prepare high-quality Ni-rich positive materials. Besides, recently reported widely recognized studies degradation mitigation mechanisms of electrodes outlined in this paper. doping useful enhancing capacity performance mitigating structural decay electrodes. Moreover, surface modifications by thin coatings with metal oxides Li containing oxide layers also reviewed those overlayers can enhance stability NMCs during long-term cycling. Therefore, focus paper is fabrication Ni rich material, well reviewing effect doping, coating synergistic both material Schematic illustration changes bare modified (Coated, Doped) • Nickel challenge stability. covers recent research enhancement Different discussed. Criteria effective strategy optimized proposed. Major recommendations further