NDLI: Hot Pressing of Electrospun PVdF-CTFE Membranes as Separators for Lithium Batteries: a Delicate Balance Between Mechanical Properties and Retention

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Hot Pressing of Electrospun PVdF-CTFE Membranes as Separators for Lithium Batteries: a Delicate Balance Between Mechanical Properties and Retention

Content Provider	Scientific Electronic Library Online (SciELO)
Author	Trequattrini, Francesco Palumbo, Oriele Vitucci, Francesco Maria Miriametro, Antonio Croce, Fausto Paolone, Annalisa
Abstract	A systematic investigation of the effect of hot-pressing on polyvinylidene fluoride (PVdF) - chlorotrifluoroethylene (CTFE) electrospun membranes, intended as separators and substrate for the electrolyte of lithium batteries, has been carried out by means of dynamic mechanical analysis. Absorption and desorption gravimetric measurements and infrared spectroscopy have been also performed. In particular, the mechanical properties of the membranes have been measured as a function of hot pressing temperature and pressure in the range 20 - 120 °C and 0 - 4 kbar, finding an increase of about 30 times of the tensile modulus after pressing at the highest temperature and pressure. Moreover, the conductivity of hot pressed membranes swelled by an ionic liquid measured as a function of temperature between - 60 and + 70 °C practically superimposes on that of the unpressed membrane.
Related Links	http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1516-14392018000800219&lng=en&nrm=iso http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000800219&lng=en&nrm=iso
File Format	PDF
ISSN	15161439
DOI	10.1590/1980-5373-mr-2017-0878
Journal	Materials Research
Volume Number	21
Language	English
Publisher	ABM, ABC, ABPol
Publisher Date	2018-01-01
Access Restriction	Open
Subject Keyword	PVdF Electrospun membrane Hot pressing Retention Elastic modulus
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Condensed Matter Physics Materials Science Mechanical Engineering

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