Morphology controllable synthesis and electrochemical performance of LiCoO2 for lithium-ion batteries

In this work, morphology-controlled lithium cobalt oxides (LCO) were obtained by a simple two-step method that involves a Co 3 O 4 synthetic process, in which cubic and spherical Co 3 O 4 were prepared by a hydrothermal method and a subsequent lithiation process with Li 2 CO 3 . The structures and morphologies of two materials were investigated by XRD, SEM and TEM. In contrast with the LCO prepared by using commercial Co 3 O 4 precursor, the cubic and spherical LCO materials have an excellent performance in cyclic stability and rate capacity which is attributed to the better fluidity and less agglomeration with specific morphology of LCO materials.