Synthesis and Characterization of LiNi_(1/3)CO_(1/3)Mn_(1/3)O_2 as a Cathode Material for Lithium Batteries by Ultrasonic Spray Pyrolysis

Spherical morphology LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 as a cathode material of lithium ion batteries was successfully synthesized by an ultrasonic spray pyrolysis method.The effects of different precur- sor solution on the morphology of particles were investigated.The reasons of morphology difference were analysed by using the process mechanism of spray pyrolysis.In addition,the impacts of vari- ous post-treatment sintering time on electrochemical performances of the samples were characterized. Experimental results show that the cathode material synthesized by ultrasonic spray pyrolysis using nitrate as precursor solution,followed by sintering at 900℃for 6h,exhibits excellent electrochemical properties.In the voltage range of 3.0-4.3V,initial discharge capacity of the sample is 157.7mAh.g~(-1) and its capacity retains 146.6mAh.g~(-1)after 40 cycles.