Study on Preparation and Performance of LiNi0.8Co0.1Mn0.1O2 as cathode materials for lithium ion batteries

Lithium ion battery has the advantages of high working voltage, good cycling performance and environmental friendliness. It is widely used in various battery energy storage devices. High nickel ternary positive electrode materials with a-NaFeO2 type layered crystal structure have become the focus of research in recent years due to their high energy density and good cycling performance. In this paper, LiNi0.8Co0.1Mn0.1O2 high-nickel ternary material was prepared by hydrothermal method, and the properties of the material were determined by phase analysis and electrochemical analysis. and the influence of sintering temperature on the morphology and structure and electrochemical performance of the ternary-type material was investigated. The results show that the optimal process conditions for the precursor mixed lithium sintering are divided into two steps: the first step is calcined at 500C for 6h, and the second step is calcined at 800C' for 8h. Under these conditions, the LiNi0.sCo0.1Mn0.1O2 has the best morphology and the highest crystallinity, and has a specific capacity of 198.5 mAh·g-1 at the rate of 0.2 C. After 100 charge and discharge cycles at 0.2 C, the capacity retention rate is still 96.7%.