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Paper Information

Journal:   IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE)   WINTER 2012 , Volume 31 , Number 4 (64); Page(s) 29 To 34.
 
Paper: 

THE EFFECT OF LIFEPO4 COATING ON ELECTROCHEMICAL PERFORMANCE OF LIMN2O4 CATHODE MATERIAL

 
 
Author(s):  SADEGHI BEHZAD, SARRAF MAMOORY RASOUL*, SHAHVERDI HAMID REZA
 
* DEPARTMENT OF MATERIALS ENGINEERING, TARBIAT MODARES UNIVERSITY, TEHRAN, I.R. IRAN
 
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 Thermo gravimetric 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.

 
Keyword(s): SPINEL, SOLID STATE, NANOSTRUCTURE, SOL GEL DIP COATING, PHOSPHATE
 
References: 
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