the effect of lifepo4 coating on electrochemical performance of limn2o4 cathode material
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abstract
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.
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Journal title:
iranian journal of chemistry and chemical engineering (ijcce)Publisher: iranian institute of research and development in chemical industries (irdci)-acecr
ISSN 1021-9986
volume 31
issue 4 2012
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