Journal
ELECTROANALYSIS
Volume 24, Issue 11, Pages 2147-2156Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201200411
Keywords
Montmorillonite; P(VDF-TrFE); Porous membranes; Lithium ion batteries
Categories
Funding
- FEDER funds through Programa Operacional Factores de Competitividade-COMPETE
- FCT-Fundacao para a Ciencia e a Tecnologia [PTDC/CTM/69316/2006, Pest-C/QUI/UIO686/2011, PTDC/CTM-NAN/112574/2009]
- [SFRH/BD/66930/2009]
- [SFRH/BD/62507/2009]
- [SFRH/BD/68499/2010]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/68499/2010] Funding Source: FCT
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Porous membranes of poly(vinylidene fluoride-trifluoroethylene) with different contents of montmorillonite (MMT) particles were prepared. The filler content does not affect the porous morphology but leads to an increase in the average pore size, porosity and electrolyte uptake up to 16 mu m, 85?% and 325?%, respectively, for a membrane with 16 wt% of MMT particles. The mechanical properties, ionic conductivity and its temperature stability are improved by the presence of clays. The electrochemical stability reveals a stable operation window up to 5 V. The overall characteristics of the membranes for battery separators are optimized for the 4 wt% MMT filler content.
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