Preparation and properties of battery material nano-LiFePO4

Abstract

In this study, nano-LiFePO4 as the cathode material of lithium battery was prepared by different processes, and its micromorphology, crystal structure, and electrochemical performance were tested. Lithium iron phosphate was prepared by the high-temperature solid-state method and gel–sol method. The micro morphology of the product was detected by an electron microscope. The crystal structure of the product was detected by an X diffractometer. The electrochemical performance of the product was tested by charge and discharge. The results showed that the lithium iron phosphate prepared by the gel–sol method had a smaller particle size and more regular shape; the diffraction pattern of the two kinds of lithium iron phosphate was nearly consistent, but the lithium iron phosphate prepared by the gel–sol method had smaller diffraction intensity because of its smaller particle size; the lithium iron phosphate prepared by the gel–sol method were more stable and efficient and had a larger capacity during charging and discharging.