Structural Study of Li–Fe–P–O Powder Synthesized by the Extraction-Pyrolytic Method

Abstract

Iron lithium phosphorus oxide, which is promising for use as a cathode material in lithium-ion batteries, has been synthesized by the extraction-pyrolytic method and further investigated. The possibility of obtaining phosphorus-containing Li–Fe–P–O cathode materials using di-(2-ethylhexyl)phosphoric acid has been shown. Structural and optical studies of Li–Fe–P–O dispersed material have been carried out using X-ray photoelectron spectroscopy and X-ray diffraction. The conditions for the formation of crystalline phases of these dispersed materials have been established. It has been shown using spectroscopic methods that the material contains carbon in its composition, which helps improve electron mobility.