Abstract
The spinel LiMn2O4 was obtained by a microwave-assisted solid-state reaction between LiOH·H2O and ε-MnO2 in a practical setup using a domestic microwave oven. XRD analyses showed that the spinel LiMn2O4 was obtained as a single phase after only 3min of microwave heating. SEM micrographs revealed particles having a prismatic morphology and sizes in the 0.5–1.5μm range. The characteristic voltammetric profile of the spinel LiMn2O4 was obtained for the synthesized material, while its charge−discharge tests presented good electrochemical stability and a significant initial specific capacity (95mAhg−1) at a high discharge rate (C/1). These results indicate that a rapid and facile microwave-assisted synthesis can yield the spinel LiMn2O4 with adequate properties to be used as a cathode material in lithium-ion batteries.
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