The Effect of Interdiffusion on the Properties of Lithium-Rich Core-Shell Cathodes

To obtain the highest energy density, lithium ion batteries based on layered Li-Ni-Mn-Co oxides need to be charged to above 4.5 V without sacrificing lifetime. Lithium-rich core-shell (CS) structured positive electrodes having a high energy density core material with poor stability against the electrolyte can be protected by a thin layer of a stable shell material. In this work, the effects of the initial shell thickness, sintering temperature …