Significant Improvement of Electrochemical Performance of AlF[sub 3]-Coated Li[Ni[sub 0.8]Co[sub 0.1]Mn[sub 0.1]]O[sub 2] Cathode Materials

The particle surface of was modified with as a coating material to improve the electrochemical properties. The effect of coating on cathode was extensively studied with respect to the structural and electrochemical properties, and thermal stability. The coating on particles improved the overall electrochemical properties, such as the cyclability, rate capability, and thermal stability, compared to pristine . Electrochemical impedance spectroscopy and transmission electron microscopy showed that the coating on particles played an important role in stabilizing the interface between the cathode and electrolyte.