An easy large-scale preparation of γ-MnOOH 1D nanorods for advanced LIBs application

Abstract

MnOOH is a widely used inorganic material, and is mainly prepared using sealed autoclaves under heating conditions, which restricts its large-scale preparation. In this study, a novel reaction route under normal pressure and normal temperature is first designed to prepare γ-MnOOH nanorods by reacting KMnO4 and N(CH3COO)3. Further, MnO2 and LiMn2O4 with inherited morphology are synthesized adopting the as-prepared γ-MnOOH nanorods as the template. Several techniques including X-ray diffraction, scanning electron microscopy, and transmission electron microscope have been utilized to characterize the resulting powders. When applied as an electrode of Li-half batteries, the intrinsic one-dimension (1D) structure characteristic endows the resultants with prominent electrochemical properties including high capacity, great cyclic stability and excellent rate capability, indicating its significant potential for application in advanced Li-ion batteries (LIBs). Furthermore, the as-prepared MnOOH nanorods can also be extended to other fields.