A LiNi1/3Co1/3Mn1/3O2 (NCM) cathode material is coated with fluoroborate glass (xLi(2)O-yB(2)O(3)-zLiF) to improve the electro-chemical performance of lithium-ion batteries. An xLi(2)O-yB(2)O(3)zLiF layer was successfully coated onto the surface of NCM by using a solution-phase method. The resulting materials are characterized by using X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The xLi(2)OyB(2)O(3)- zLiF-coated NCM exhibits a superior discharge capacity, rate capability, and cycling stability than those of the uncoated material. Notably, the initial discharge capacity of bare and 2Li(2) O-B2O3-LiF-coated NCM were 182.1 and 207.5 mAhg(-1), respectively, in the voltage range from 2.5 to 4.5 V. At a rate of 5C, the discharge capacity of Li2O-B2O3-LiF-coated NCM is 144.4 mAhg(-1), whereas that of bare NCM is 76.7 mAhg(-1). After 50 cycles at a rate of 0.2C, the capacity retentions of Li2O-B2O3LiF-, 2Li(2)O-B2O3-LiF-, Li2O-2B(2)O(3)-LiF-, and Li2O-B2O3-2LiF-coated NCM are 96.8, 97.2, 95.6, and 95.2%, respectively, whereas the capacity retention of bare NCM is 81.4%. Cyclic voltammetry and electrochemical impedance spectroscopy results indicate that the xLi(2)O-yB(2)O(3)-zLiF coating reduces electrode polarization and decreases charge-transfer resistance at the electrolyte-electrode interface, further improving the electrochemical activity of the NCM cathode material.