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The Effect of LiFePO4 Coating on Electrochemical Performance of LiMn2O4 Cathode Material
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نویسنده
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Sadeghi Behzad ,Sarraf-Mamoorye Rasoul ,Shahverdi Hamid Reza
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منبع
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iranian journal of chemistry and chemical engineering - 2012 - دوره : 31 - شماره : 4 - صفحه:29 -33
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چکیده
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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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کلیدواژه
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Spinel ,Solid state ,Nanostructure ,Sol gel dip coating ,Phosphate
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آدرس
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tarbiat modares university, Department of Materials Engineering, Tarbiat Modares University, P O Box 4838-141 Tehran, I R IRAN, ایران, tarbiat modares university, Department of Materials Engineering, Tarbiat Modares University, P O Box 4838-141 Tehran, I R IRAN, ایران, tarbiat modares university, Department of Materials Engineering, Tarbiat Modares University, P O Box 4838-141 Tehran, I R IRAN, ایران
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Authors
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