Porous Membranes of Montmorillonite/Poly(vinylidene fluoride‐trifluorethylene) for Li‐Ion Battery Separators | Zendy

NunesPereira J. | Zendy; Lopes A. C. | Zendy; Costa C. M. | Zendy; Leones R. | Zendy; Silva M. M. | Zendy; LancerosMéndez S. | Zendy

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Porous Membranes of Montmorillonite/Poly(vinylidene fluoride‐trifluorethylene) for Li‐Ion Battery Separators

Author(s) -

NunesPereira J.,

Lopes A. C.,

Costa C. M.,

Leones R.,

Silva M. M.,

LancerosMéndez S.

Publication year - 2012

Publication title -

electroanalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.574

H-Index - 128

eISSN - 1521-4109

pISSN - 1040-0397

DOI - 10.1002/elan.201200411

Subject(s) - montmorillonite , membrane , materials science , fluoride , electrolyte , porosity , chemical engineering , ionic conductivity , electrochemistry , conductivity , electrochemical window , filler (materials) , polymer chemistry , composite material , inorganic chemistry , chemistry , electrode , biochemistry , engineering

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 μm, 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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