Please use this identifier to cite or link to this item:

TitlePoly(vinylidene fluoride)-based, co-polymer separator electrolyte membranes for lithium-ion battery systems
Author(s)Costa, C. M.
Gomez Ribelles, J. L.
Lanceros-Méndez, S.
Appetecchi, G. B.
Scrosati, B.
KeywordsPoly(vinylidene fluoride) copolymers
Polymeric blends
Gel polymer electrolytes
Lithium battery applications
Issue dateJan-2014
JournalJournal of Power Sources
CitationCosta, C. M., Gomez Ribelles, J. L., Lanceros-Méndez, S., Appetecchi, G. B., & Scrosati, B. (2014). Poly (vinylidene fluoride)-based, co-polymer separator electrolyte membranes for lithium-ion battery systems. Journal of Power Sources, 245, 779-786.
Abstract(s)In the present paper we report and discuss the physicochemical properties of novel electrolyte membranes, based on poly(vinylidenefluoride-co-trifluoroethylene), PVdF-TrFE, and poly(vinylidenefluorideco- hexafluoropropylene), PVdF-HFP, co-polymer hosts and the PVdF-TrFE/poly(ethylene oxide (PEO) blend as separators for lithium battery systems. The results have shown that the examined separator membranes, particularly those based on the PVdF co-polymers, are able to uptake large liquid amounts leading to high ionic conductivity values. Tests performed on Li/LiFePO4 and Li/SneC cells have revealed very good cycling performance even at high current rates and 100% of DOD, approaching the results achieved in liquid electrolytes. A capacity fading lower than 0.002% per cycle was observed. Particularly, the Li/LiFePO4 cathode cells have exhibited excellent rate capability, being still able to deliver at 2C above 89% of the capacity discharged at 0.1C. These results, in conjunction with the about 100% coulombic efficiency, suggest very good electrolyte/ electrode compatibility, which results from the high purity and stability of the electrolyte and electrode materials and the cell manufacturing.
Publisher version
AccessRestricted access (UMinho)
Appears in Collections:CDF - FCD - Artigos/Papers (with refereeing)

Files in This Item:
File Description SizeFormat 
electrolyte membranes.pdf
  Restricted access
electrolyte membranes1,57 MBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID