Controlled crystallization method was put forward to synthesize spherical MnCO3. MnCO3 precursor was mixed uniformly with Li2CO3 in agate mortar, followed by calcination at high temperature, and then spherical or sphere-like spinel LiMn2O4 was attained. The electrochemical performances of LiMn2O4 prepared by normal solid-state reaction and controlled crystallization method respectively were compared, it showed that the stoichiometric spherical LiMn2O4 had obviously excellent electrochemical performance, whose initial reversible capacity was 129.40 mAh/g with high capacity retention of 95.28% a...
