Novel poly(vinylidene fluoride-trifluoroethylene)/poly(ethylene oxide) blends for battery separators in lithium-ion applications

[Display omitted] ► New P(VDF-TrFE)/PEO polymer blends were prepared for battery separator. ► The porosity and hydrophilicity degree are tailored within this blend. ► Ionic conductivity depends on PEO presence and is stable with temperature. ► High ionic conductivity of 0.25mScm−1 for the 60/40 blen...

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Bibliographic Details
Published in:Electrochimica acta 2013-01, Vol.88, p.473-476
Main Authors: Costa, C.M., Nunes-Pereira, J., Rodrigues, L.C., Silva, M.M., Ribelles, J.L. Gomez, Lanceros-Méndez, S.
Format: Article
Language:English
Subjects:
Applied sciences
Blends
Chemistry
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Electrochemistry
Electrolytes
Exact sciences and technology
General and physical chemistry
Ionic conductivity
Li-ion batteries
Lithium batteries
Membranes
Oxides
P(VDF-TrFE)/PEO blends
Polymer blends
Separator membranes
Separators
Uptakes
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Summary:[Display omitted] ► New P(VDF-TrFE)/PEO polymer blends were prepared for battery separator. ► The porosity and hydrophilicity degree are tailored within this blend. ► Ionic conductivity depends on PEO presence and is stable with temperature. ► High ionic conductivity of 0.25mScm−1 for the 60/40 blend. Polymer blends based on poly(vinylidene fluoride-trifluoroethylene)/poly(ethylene oxide), P(VDF-TrFE)/PEO for Li-ion battery separator applications have been prepared through solvent casting technique. The microstructure, hydrophilicity and electrolyte uptake strongly depend on PEO content within the blend. The best value of ionic conductivity at room temperature was 0.25mScm−1 for the 60/40 membrane. The membranes are electrochemically stable.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2012.10.098