Effects of cobalt-ion doping on the electrochemical properties of spinel lithium manganese oxide prepared via a reverse-micelle route

摘要: Abstract Monophasic, ultrafine cobalt ion-doped lithium manganate powders have been prepared via a reverse-micelle process. LiMn 1.8 Co 0.2 O 4 were obtained after heating at 500 °C for 2 h. Both the required reaction temperature and duration synthesizing this compound greatly reduced, compared to those in conventional technique involving solid-state reaction. Increasing water oil (W/O) volume ratio resulted an increase particle size of as well formation impure Li MnO 3 phase. Nanosized, monophasic when W/O was 1/5. Raising led crystallite . Based on analytic results electrochemical properties, derived spinel phase confirmed exhibit moderate discharge capacity improved cycleability ambient elevated temperatures.