Infiltrative coating of LiNi0.5Co0.2Mn0.3O2 microspheres with layer-structured LiTiO2: towards superior cycling performances for Li-ion batteries

Abstract

Layer-structured LiTiO₂ as a coating layer is built on the surface of ternary layered LiNi_0.5Co_0.2Mn_0.3O₂ microspheres using a facile infiltrative pre-coating approach. The uniform, nanoscale LiTiO₂ coating layer doped with Ni²⁺ and Mn⁴⁺ ions strongly adheres to the host materials, which endows LiNi_0.5Co_0.2Mn_0.3O₂ microspheres with superior high-voltage cycling and thermal stability when used as cathode material for Li-ion batteries.