High
voltage spinel manganese oxide LiNi0.5Mn1.5O4 (LNMO) cathodes are promising for practical
applications owing to several strengths including high working voltages,
excellent operating safety, low costs, and so on. However, LNMO-based
lithium–ion batteries (LIBs) fade rapidly mainly owing to unqualified
electrolytes, hence becoming a big obstacle toward practical applications.
To tackle this roadblock, substantial progress has been made thus
far, and yet challenges still remain, while rare reviews have systematically
discussed the status quo and future development of electrolyte optimization
coupling with LNMO cathodes. Here, we discuss cycling degradation
mechanisms at the cathode/electrolyte interface and ideal requirements
of electrolytes for LNMO cathode-equipped LIBs, as well as review
the recent advance of electrolyte optimization for LNMO cathode-equipped
LIBs in detail. And then, the perspectives regarding the future research
opportunities in developing state-of-the-art electrolytes are also
presented. The authors hope to shed light on the rational optimization
of advanced organic electrolytes in order to boost the large-scale
practical applications of high voltage LNMO cathode-based LIBs.