A novel preparation of core–shell electrode materials via evaporation-induced self-assembly of nanoparticles for advanced Li-ion batteries

Abstract

We report, for the first time, a simple and novel synthesis of a Li-rich layered-spinel core–shell heterostructure (L@S core–shell) via evaporation-induced self-assembly (EISA) of Ni-doped Li₄Mn₅O₁₂ nanoparticles (Li₄Mn_4.5Ni_0.5O₁₂) onto the surface of layered Li[Li_0.2Mn_0.54Ni_0.13Co_0.13]O₂ (LMNCO) without using any surfactant during the coating process. The resultant L@S core–shell as a cathode in lithium ion batteries demonstrates significantly improved specific capacity, cycling performance and rate capability compared to pristine LMNCO.