Synthesis of Spinel ZnMn₂O₄ Nanoparticle Assemblies Via a Flower-like ZnO Precursor Route for Lithium Battery Anodes with Enhanced Electrochemical Performance

摘要

In this work, the spinel ZnMn2O4 nanoparticle assemblies have been successfully prepared using aflower-like ZnO as a precursor via a facile a water bath method. The method is a low-cost, simple andlarge-scale production. The electrochemical performance as Li-ion battery (LIB) materials was tested,-1 the ZnMn2O4 nanoparticle assemblies exhibit a high reversible capacity of 500 mA h g for 150 cycles at 500 mA g . Even at high rate of 1600 mA g , the ZnMn2O4 can still retain a stable capacity of 235 mAh g . These results suggest that the facile synthetic strategy of preparing the ZnMn2O4nanoparticle assemblies can improve electrochemical performance with higher-rate capability andbetter cycle durability.