Bifunctional urea surface-modified high voltage LiNi0.5Mn1.5O4 cathode for enhanced electrochemical performance

Evaluation of Electronic–Ionic Transport Properties of a Mg/Zr-Modified LiNi0.5Mn1.5O4 Cathode for Li-Ion Batteries

“…LiNi 0.5 Mn 1.5 O 4 (LNMO) is a promising candidate as a high-voltage Co-free cathode for LIBs because of an operating voltage of ∼4.7 V (vs Li + /Li) and theoretical specific capacity of around 147 mAh g –1 . 1 However, LNMO suffers from capacity decay during prolonged charge/discharge cycling, especially at high temperatures or high C-rates, hindering its large-scale commercialization applications. , This drawback is partially associated with the multiple-phase transitions occurring during charge–discharge experiments and the instability of the material structure under high voltage …”

“…15 However, LNMO suffers from capacity decay during prolonged charge/discharge cycling, especially at high temperatures or high C-rates, hindering its large-scale commercialization applications. 6,7 This drawback is partially associated with the multiple-phase transitions occurring during charge− discharge experiments and the instability of the material structure under high voltage. 8 Therefore, in order to improve the electrochemical performance of LNMO, an important key is to provide further insights into the reaction pathway and kinetics of the solid-state phase transformation.…”

“…1 5 However, LNMO suffers from capacity decay during prolonged charge/discharge cycling, especially at high temperatures or high C-rates, hindering its large-scale commercialization applications. 6 , 7 This drawback is partially associated with the multiple-phase transitions occurring during charge–discharge experiments and the instability of the material structure under high voltage. 8 …”