Abstract: A novel technique was studied to prepare cathode materials for lithium-ion battery. Ultrafine LiCoO₂ powders were synthesized by a spray drying method. DTA/TGA
were employed to analyze the mixed powders. XRD results show that the prepared LiCoO₂ is HT-LiCoO₂ which has α-NaFeO₂ structure type. SEM photographs
show that the powders are homogeneous with grain size of hundreds of nanometer. Electrochemical property experiments testify that the powders have excellent
electrochemical properties with initial charge capacity of 148mAh/g and discharge capacity of 135mAh/g. Its prospect of industrialization is attractive.

Key words: LiCoO₂, electrochemical property, spray drying method