the effect of lifepo4 coating on electrochemical performance of limn2o4 cathode material

limn2o4 spinel cathode materials have been successfully synthesized by solid-state reaction. surface of these particles were modified by nanostructured lifepo4 via sol gel dip coating method. synthesized products were characterized by thermally analyzed by thermogravimetric and differential thermal analysis(tg/dta), x-ray diffraction (xrd), scanning electron microscopy (sem), and energy dispersive x-ray (edx) spectroscopy. the results of electrochemical tests showed that the charge/discharge capacities improved up to 120 mah/g and charge retention of battery enhanced over  %95. this improved electrochemical performance is caused by lifepo4 phosphate layer on surfaces of limn2o4cathode particles.