Surface-Modified Spinel LiNi0.5Mn1.5O4 for Li-Ion Batteries

Spinel LiNi 0.5 Mn 1.5 O 4 has received great attention as one of the most outstanding cathode materials for Li-ion batteries (LIBs) because of its high energy density resulting from the operating voltage of ~4.7 V (vs.Li + /Li) based on the Ni 2+ /Ni 4+ redox reaction.However, LiNi 0.5 Mn 1.5 O 4 is known to suffer from undesirable side reactions with the electrolyte at high voltage as well as Mn dissolution from the structure.These issues prevent the realization of the optimal electrochemical performance of LiNi 0.5 Mn 1.5 O 4 .Extensive research has been conducted to overcome these issues.This review presents an overview of the various surface-modification methods available to improve the electrochemical properties of LiNi 0.5 Mn 1.5 O 4 and provides perspectives on further research aimed at the application of LiNi 0.5 Mn 1.5 O 4 as a cathode material in commercialized LIBs.