Sichuan Contemporary Amperex Technology Co.,Ltd.,Yibin
Yibin Guang Yuan Lithium BatteryMaterial Co.,Ltd.,Yibin

作为新型绿色能源,锂离子电池已在众多领域表现出可取代传统石化能源的巨大潜力,为践行绿色可持续发展、减少碳排放做出了显著贡献,电池材料作为锂离子电池的重要组成部分,其性能决定了锂离子电池未来的发展空间,现阶段锂离子电池负极材料已相对成熟和稳定,而锂离子电池正极材料种类多样,可调控因素较多,发展空间巨大,是锂离子电池快速发展最为关键的单元。镍钴锰三元正极材料具有能量密度高、环境友好、容量可逆等优点,被认为是现在和未来最有潜力的正极材料之一。近年来,镍钴锰三元正极材料已展示出强大的商业潜力,与此同时,人们对镍钴锰三元正极材料也提出了更高的要求,受制于正极材料循环稳定性差的本质问题,导致其实际性能与理论性能之间差值较大,鉴于其丰富的可调控性,镍钴锰三元正极材料性能提升空间巨大。主要探讨了镍钴锰三元正极材料存在的各项问题,包括Ni/Li混排、表面残碱、活性氧释放、过渡金属离子溶解以及晶界间裂纹,并阐述了元素掺杂、表面包覆以及元素掺杂和表面包覆协同效应等性能增强策略对镍钴锰三元正极材料性能的影响及作用机制,以期为该领域的科研工作者提供新的研究思路,以激发更多的创新见解,促进镍钴锰三元正极材料的快速发展。

As a new type of green energy,lithium-ion battery has shown great potential to replace traditional petrochemical energy inmany fields,and has made remarkable contributions to the practice of green sustainable development and the reduction of carbonemissions. As an important part of lithium-ion batteries,and their performance determines the future development space of lithium-ionbatteries. At this stage,the cathode materials of lithium-ion batteries are relatively mature and stable,while the cathode materials oflithium-ion batteries are diverse,with many controllable factors and huge development space,which is the most critical unit for the rapiddevelopment of lithium-ion batteries. Nickel-cobalt-manganese ternary cathode material has the advantages of high energy density,environmental friendliness and reversible capacity,and is considered as one of the most potential cathode materials at present and in thefuture. In recent years,Ni−Co−Mn ternary cathode materials have shown strong commercial potential. At the same time,people have putforward higher requirements for Ni−Co−Mn ternary cathode materials. Due to the essential problem of poor cycle stability of cathodematerials,there is a big difference between their actual performance and theoretical performance. Due to their rich controllability,there isa huge room for improving the performance of Ni−Co−Mn ternary cathode materials. In this work,the problems existing in Ni−Co−Mnternary cathode materials were mainly discussed,including mixed discharge of Ni/Li,residual alkali on the surface,release of activeoxygen,dissolution of transition metal ions and intergranular crack,and the effects and mechanisms of performance enhancementstrategies such as element doping,surface coating and synergistic effect of element doping and surface coating on the properties ofNi−Co−Mn ternary cathode materials were expounded,so as to provide new research ideas for researchers in this field,stimulate more innovative ideas and promote the rapid development of Ni−Co−Mn ternary cathode materials.

郑德兵,杜先锋,宋方亨.镍钴锰三元正极材料性能增强策略的研究进展[J].洁净煤技术,2025,31(1):131−144.

ZHENG Debing,DU Xianfeng,SONG Fangheng. Progress in performance strengthening strategies of Ni−Co−Mn ternarycathode materials[J].Clean Coal Technology,2025,31(1):131−144.