An effective modification of LiNi0.6CO0.2Mn0.2O2 with Li1.3Al0.3Ti1.7(PO4)3 as a high-performance cathode material for Li-ion batteries

LiNi0.6Co0.2Mn0.2O2 (NMC 622) cathode material is widely used for lithium-ion batteries. The effect of the method of creating a protective layer of Li1.3Al0.3Ti1.7(PO4)3 (LATP) on the electrochemical characteristics of commercial cathode material NMC 622 was investigated. It was found that both methods of LATP coating did not affect the crystal structure and morphology of NMC 622. The prototypes of Li-ion batteries with a cathode based on modified NMC 622 are characterized by significantly higher stability of capacitive characteristics during long charge/discharge cycling, compared with prototypes of Li-ion batteries based on the pristine cathode material. In addition, the protective layer of LATP, applied by the sol–gel method, can significantly increase the capacity of the cathode material NMC 622 at the high current density and reduce the capacity drop during the continuous charge/discharge cycling. Creating a protective layer of LATP via sol–gel method is an effective way to improve the electrochemical characteristics of cathode materials such as NMC 622.