Synthesis and Electrochemical Properties of KMn₈O₁₆ Nanorods

Abstract

KMn8O16 nanorods were prepared by a rheological phase method using KMnO4 and Mn (CH3COO)2•4H2O as reactants. The samples were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results showed that the morphology of the samples was nanorods with a diameter of about 5~15 nm. The electrochemcial testing showed that the KMn8O16 nanorods annealed at 400 °C for 4 h exhibited good lithium storage properties, with a high reversible capability (143 mAh/g at current density of 50 mA/g) and stable lithium-ion insertion/de-insertion reversibility.