Sb-Doped high-voltage LiCoO 2 enabled improved structural stability and rate capability for high-performance Li-ion batteries.

Sb-Doped high-voltage LiCoO 2 was developed with unique properties. In situ X-ray diffraction and density functional theory reveal that the introduction of Sb helps to shorten the Li + diffusion distance, increase the lattice spacing and keep the structural stability during deep lithiation, thus resulting in improved rate capability and cycling performance.