Structure, modification, and commercialization of high nickel ternary material (LiNiCoMnO and LiNiCoAlO) for lithium ion batteries

LiNiCoMnO (NCM811), as one of the most promising cathode materials for lithium ion batteries, has gained a huge market with its obvious advantages of high energy density and low cost. It has become a competitive material among various cathode materials. However, in NCM811, the phenomenon of “cationic mixed discharge” is serious, resulting the cyclic performance performing badly. In addition, the thermal stability of ternary material will also be poor with the increase of nickel when temperature is high. In view of the above-mentioned situation, researchers come up with different methods to modify LiNiCoMnO by doping and coating to reduce mixing effect and improve its electrochemical performance. Here, we sketch out the structure, properties, and existing problems of NCM811 and summarize some cutting-edge modification methods. Finally, the development direction and commercial application of NCM811 cathode materials are prospected to accelerate its commercialization process.