Study on Synthesis and Modification of Ce Coated Lithium Ion High Nickel Cathode Materials
The cathode material LiNi0.8Co0.1Mn0.1O2 is prepared by solid phase mixing and high-temperature sintering of Lithium oxide monohydrate and precursor(chemical formula:Ni0.8Co0.1Mn0.1(OH)2),and then the material surface is coated with Ce coating layers of different contents by liquid phase method.XRD,SEM,and Coin cell were used to test and characterize the effect of Ce coating amount on the material structure,morphology,and electrochemical performance.The experimental results show that the synthesized high nickel cathode material has a R-3m spatial structure with a-NaFe02 type structure.When the coating amount is 0.05%,the maximum capacity reaches 216.55 mAh/g,and the retention rate reaches 87.44%after 50 cycles.The comprehensive performance is the best.
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