Deciphering the effects of hexagonal and monoclinic structure distribution on the properties of Li-rich layered oxides

Abstract

Uniform distribution of Li₂MnO₃ and LiMO₂ components in a Co-free Li-rich layered oxide is achieved by treating precursors with NH₃·H₂O, which expands the lattice parameter and promotes the activation of Li₂MnO₃, resulting in excellent electrochemical performance. What's more, it also contributes to the storage stability of Li-rich layered oxides.