Electrodeposited MnO x/carbon nanofiber composites for use as anode materials in rechargeable lithium-ion batteries

Abstract

Carbon nanofiber-supported MnO x composites were prepared by electrodepositing MnO x nanoparticles directly onto electrospun carbon nanofibers. The morphology and size of MnO x nanoparticles were controlled by the surface treatment of carbon nanofibers and the electrodeposition duration time. SEM, TEM/EDS, elemental analysis, and XRD were used to study the morphology and composition of MnO x on the nanofibers. The resultant MnO x/carbon nanofiber composites were used directly as the anode material in lithium half cells and their electrochemical performance was characterized. Results show that MnO x/carbon nanofiber composites prepared by different deposition durations have high reversible capacity, good capacity retention, and excellent structural integrity during cycling.