Abstract
Lithium manganese oxide (LiMn2O4) cathode materials are synthesized by a facile solid state reaction method using planetary ball-milled mixtures of Li2CO3 and MnO2 as materials. The as-prepared LiMn2O4 is analyzed by XRD, SEM and AAS to investigate the effects of ball milling on the grain size and morphology of LiMn2O4. It is found that ball milling treatment can reduce the (111) surfaces of LiMn2O4 and improve the corresponding electrochemical performance. The LiMn2O4 prepared after 6 h ball-milling shows higher first discharge capacity (129.3 mA h g−1 at 0.5 C) and excellent cycling stability (94.95% after 30 cycles).
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