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Characterization of solvent-free polymer electrolytes consisting of ternary PEO-LiTFSI-PYR14 TFSI
ENEA (Italian National Agency for New Technologies, Energy and the Environment), IDROCOMB, Casaccia Research Center, 00060 Rome, Italy. (Organic photonics and electronics group)
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2006 (English)In: Journal of the Electrochemical Society, ISSN 0013-4651, E-ISSN 1945-7111, Vol. 153, no 9, A1649-A1654 p.Article in journal (Refereed) Published
Abstract [en]

The physical properties and electrochemical performance of solvent-free polymer electrolytes, consisting of poly(ethylene oxide) [P(EO)] with Li+'>Li +  Li+ and N'>N N -butyl-N'>N N -methylpyrrolidinium (PYR14+)'>(PYR + 14 ) (PYR14+) salts of bis(trifluoromethanesulfonyl)imide (TFSI), are reported. The addition of the PYR14TFSI'>PYR 14 TFSI PYR14TFSI room-temperature molten salt to the conventional P(EO)10LiTFSI'>P(EO) 10 LiTFSI P(EO)10LiTFSI polymer electrolyte results in a significant enhancement of the ionic conductivity (to 2.6×10−4S∕cm'>2.6×10 −4 S/cm 2.6×10−4S∕cm at 20°C'>20°C 20°C ). Limetal∕LiFePO4'>Limetal∕LiFePO 4  Limetal∕LiFePO4 batteries making use of this new family of solid polymer electrolytes have shown a very promising low-temperature cycle life. It was found that a Limetal∕LiFePO4'>Limetal∕LiFePO 4  Limetal∕LiFePO4 cell at 20°C'>20°C 20°C can deliver 138mAh∕g'>138mAh∕g 138mAh∕g during the first discharge, corresponding to 90% of the nominal specific capacity (154mAh∕g)'>(154mAh∕g) (154mAh∕g) , and a promisingly low capacity fading of about 0.2%/cycle over 500 cycles.

Place, publisher, year, edition, pages
Pennington: Electrochemical Society, 2006. Vol. 153, no 9, A1649-A1654 p.
Keyword [en]
polymer electrolytes, ionic conductivity, solid electrolytes, secondary cells
National Category
Materials Chemistry
URN: urn:nbn:se:umu:diva-19415DOI: 10.1149/1.2211928ISI: 000239250600004OAI: diva2:201780
Available from: 2009-03-05 Created: 2009-03-05 Last updated: 2016-08-19Bibliographically approved

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Shin, Joon-Ho
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