Towards superior high-rate cyclability of fine LiNi0.88Co0.12O210.1016/j.matlet.2019.03.078 cathode materials for lithium-ion battery via a solvothermal routine

At present, the chemical co-precipitation dominates the synthesis pathway of LiNiO2-based cathode material for lithium ion batteries (LIBs). Compared with conventional co-precipitation method, advanced functional powder materials synthesized by solvothermal method exhibit fine grain size, higher crystallinity and integrity. In this work, the uniformly dispersed nickel-cobalt microsphere precursor with porous structure and fine size is prepared by solvothermal routine without any template. Subsequently, the LiNi0.88Co0.12O2 is synthesized by high-temperature solid-state method. The feasibility of LiNi0.88Co0.12O2 as high-performance cathode material for LIBs is explored. As a result, the as-synthesized LiNi0.88Co0.12O2 shows excellent high-rate cyclability due to the fine size and particles integrity inherited from nickel-cobalt microsphere precursor. This study reveals that solvothermal routine is a prospective method for synthesizing new formula LiNiO2-based cathode material.