Hydrothermal-assisted synthesis of surface aluminum-doped LiCoO2 nanobricks for high-rate lithium-ion batteries

Surface-doped LiCoO2 nanobricks were prepared through a two-step preparation method. LiCoO2 precursors with a size of ~80 nm were obtained through a mixed-alkalis hydrothermal reaction. After post-annealing and surface Al3+ doping operations, the final LiCoO2 nanobricks showed enhanced 3.0-4.5 V Li+ storage capability and 5 C cycling stability.390