MnO/C Cubo-polyhedrons Derived from α-MnO2@ZIF-8 as Anode Materials for High-Performance Lithium-ion Batteries
In this work, MnO/C cubo-polyhedrons were successfully constructed with carbonizing α-MnO2@ZIF-8 precursors synthesized by the sea urchin shaped α-MnO2 microspheres as a template. The as-prepared samples possess irregular polyhedral cubic structure matrix coated with a thin carbon layer, characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). When exploited as anode material for LIBs, MnO/C cubo-polyhedrons exhibit a high initial specific capacity of 1217.5 mAh g-1 at the current density of 0.1 A g-1, outstanding long cycling performance with reversible capacity of 1308 mAh g-1 at 0.2 A g-1 for 500th cycle and superior rate performance. Thus, MnO/C cubo-polyhedrons provide a new insight into the development of anode materials for next-generation high performance lithium ion batteries.