Facile synthesis of aluminum-doped LiNi0.5Mn1.5O4 hollow microspheres and their electrochemical performance for high-voltage Li-ion batteries

LiNi0.5Mn1.5O4 and Al doped LiNi0.5Mn1.5O4 hollow microspheres as 5 V cathodes are prepared by templated transformation method using monodisperse MnCO3 microspheres as precursor. As a cathodic material for high voltage lithium ion batteries, the as-synthesized LiNi0.5Mn1.5O4 and Al doped LiNi0.5Mn1.5O4 hollow microspheres are investigated by galvanostatic cycling (GC) approach to evaluate their electrochemical properties in the range of 2.7-4.8 V vs. Li/Li+ at the current rate 1 C.