Facile synthesis and electrochemical properties of layered Li[Ni 1/3 Mn 1/3 Co 1/3 ]O 2 as cathode materials for lithium-ion batteries

A layered oxide Li[Ni 1/3 Mn 1/3 Co 1/3 ]O 2 was synthesized by an oxalate co-precipitation method. The morphology, structural and composition of the as-papered samples synthesized at different calcination temperatures were investigated. The results indicate that calcination temperature of the sample at 850°C can improve the integrity of structural significantly. The effect of calcination temperature varying from 750°C to 950°C on the electrochemical performance of Li[Ni 1/3 Mn 1/3 Co 1/3 ]O 2 , cathode material of lithiumion batteries, has been investigated. The results show that Li[Ni 1/3 Mn 1/3 Co 1/3 ]O 2 calcined at 850°C possesses a higher capacity retention and better rate capability than other samples. The reversible capacity is up to 178.6 mA∙h∙g -1 , and the discharge capacity still remains 176.3 mA∙h∙g -1 after 30 cycles. Moreover, our strategy provides a simple and highly versatile route in fabricating cathode materials for lithium-ion batteries.