Multiphase LiNi0.33Mn0.54Co0.13O2 Cathode Material with High Capacity Retention for Li‐Ion Batteries

Abstract An integrated layered‐spinel LiNi0.33Mn0.54Co0.13O2 material was synthesized through a self‐combustion reaction (SCR), characterized by using X‐ray diffraction, scanning electron microscopy, transmission electron microscopy (TEM), and Raman spectroscopy. It was studied as a cathode material for Li‐ion batteries and its electrochemical performance was compared with that of the layered cathode material LiNi0.33Mn0.33Co0.33O2 when operated over a wide potential window. The Rietveld analysis of LiNi0.33Mn0.54Co0.13O2 indicated the presence of monoclinic Li[Li1/3Mn2/3]O2 (31 %) and rhombohedral (LiNixMnyCozO2) (62 %) phases as the major components, and the spinel (LiNi0.5Mn1.5O4) (7 %) as a minor component, which is supported by TEM and electron diffraction analyses. A discharge specific capacity of about 170 mAh g−1 is obtained in the potential range of 2.3–4.9 V versus Li at low ra…