Nanostructured LiNi1/3Co1/3Mn1/3O2 powders were successfully synthesized via an ultrasonic spray pyrolysis process. The prepared powders were composed of nanosized crystallites and formed a spherical shape. Well-crystallized structure was obtained after calcination at 800 degrees C. The prepared LiNi1/3Co1/3Mn1/3O2 powders exhibited a high discharge capacity of 184 mAh/g within the voltage range of 2.5-4.5 V. The capacity retention was 78% after 100 cycles test at 1C charging and 3C discharging rate at 55 degrees C.