Surface Modification of LiMn2O4 for Lithium Batteries by Nanostructured LiFePO4 Phosphate

Abstract EN

LiMn2O4 spinel cathode materials have been successfully synthesized by solid-state reaction.

Surface of these particles was modified by nanostructured LiFePO4 via sol gel dip coating method.

Synthesized products were characterized by thermally analyzed thermogravimetric and differential thermal analysis (TG/DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy dispersive X-ray spectroscopy (EDX).

The results of electrochemical tests showed that the charge/discharge capacities improved and charge retention of battery enhanced.

This improved electrochemical performance is caused by LiFePO4 phosphate layer on surfaces of LiMn2O4 cathode particles.