Due to the high specific capacity and low cost, transition metal oxides (TMOs) exhibit huge potential as anode materials for high-performance Li-ion batteries. This study presents the facile synthesis, structural… Click to show full abstract
Due to the high specific capacity and low cost, transition metal oxides (TMOs) exhibit huge potential as anode materials for high-performance Li-ion batteries. This study presents the facile synthesis, structural study and electrochemical investigation of ZnMn2O4/carbon (ZMO/C) electrodes. Stabilization of the redox reaction and functional loading of conductive carbon are employed to improve their reversible Li+ storage performance. In the calcination process with carbon, analyzed via high-temperature X-ray diffraction, the tetragonal ZnMn2O4 undergoes a phase change into MnO/ZnO under an inert atmosphere at around 350 °C, while the initial ZnMn2O4 phase is transformed into Mn2.03O4/ZnO composite phases under air. The influences of the calcinating temperature and carbon loading on electrochemical performance are investigated, and the excellent cycling stability of ZMO/C electrodes is ascribed to the stable redox reaction and carbon loading. This strategy has led to particular improvement in the structural/electrochemical stability and long-term Li+ storage for conversion electrodes.
               
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