Angulakshmi, N. and Nahm, K.S. and Nair, J.R. and Gerbaldi, C. and Bongiovanni, R. (2013) Cycling profile of MgAl2O4-incorporated composite electrolytes composed of PEO and LiPF6 for lithium polymer batteries. Electrochimica Acta, 90. pp. 179-185. ISSN 0013-4686

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Abstract

Magnesium aluminate (MgAl2O4)-incorporated poly(ethylene oxide) (PEO)–lithium hexafluorophosphate (LiPF6) based composite polymer electrolyte (CPE) membranes were prepared by a hot press for the first time. The membranes were subjected to X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric (TG), differential scanning calorimetry (DSC), tensile, impedance spectroscopy, compatibility and transport number studies. The incorporation of MgAl2O4 greatly enhanced the ionic conductivity, compatibility and mechanical integrity of the polymeric membrane. Finally, an all solid state lithium cell composed of Li/CPE/LiFePO4 was assembled and its cycling profile was analyzed at 70 ◦C. The cells delivered a discharge capacity of 127 mAh g−1 at 1 C-rate with very good capacity retention up to 100 cycles which is found to be better than those reported earlier

Item Type:	Article
Uncontrolled Keywords:	Lithium–polymer batteries; Compatibility; Lewis-acid base theory; Composite polymer electrolytes; Ionic conductivity; Charge–discharge studies
Subjects:	Lithium batteries Electrochemical Power Sources
Divisions:	UNSPECIFIED
Depositing User:	Dr. N Meyyappan
Date Deposited:	29 May 2013 08:23
Last Modified:	29 May 2013 08:23
URI:	http://cecri.csircentral.net/id/eprint/3023

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