Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Effect of Polymer Architecture on the Ionic Conductivity. Densely Grafted Poly(ethylene oxide) Brushes Doped with LiTf
Δημιουργός/Συγγραφέας:	Zardalidis G. Pipertzis A. Mountrichas G. [EL] Πίσπας, Στέργιος[EN] Pispas, Stergios Mezger M. Floudas G.
Εκδότης:	American Chemical Society
Ημερομηνία:	2016
Γλώσσα:	Αγγλικά
ISSN:	0024-9297
DOI:	10.1021/acs.macromol.6b00290
Περίληψη:	Densely grafted poly(ethylene oxide) (PEO) brushes on a poly(hydroxylstyrene) (PHOS) backbone (PHOS-g-PEO) as well as block copolymers with polystyrene (PS) (PS-b-(PHOS-g-PEO)) are designed as model systems for Li ion transport. This macromolecular design suppresses the propensity of PEO chains for complex crystal formation with LiTf as well as for crystallization. Li ion conductivities similar or even exceeding those in the archetypal electrolyte poly(ethylene oxide)/lithium triflate (PEO/LiCF3SO3 (LiTf)) are obtained for a range of temperatures and LiTf compositions. At the same time, PHOS-g-PEO and PS-b-(PHOS-g-PEO) show improved mechanical stability. Typically, at 333 K, the ionic conductivity is ∼6 × 10-5 S/cm and the modulus at ∼2 × 106 Pa for a [EO]:[Li+] = 8:1 composition. In the endeavor for suitable solid polymer electrolytes macromolecular architecture seems to play a decisive role.
Τίτλος πηγής δημοσίευσης:	Macromolecules
Τόμος/Κεφάλαιο:	49
Τεύχος:	7
Σελίδες:	2679-2687
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2016 American Chemical Society.
Σημειώσεις:	This work was cofinanced by the E.U.- European Social Fund and the Greek Ministry of Development - GSRT in the framework of the THALIS program, and the "Excellence in the Research Institutes" program. The current work was also supported by the Research unit on Dynamics and Thermodynamics of the UoI cofinanced by the European Union and the Greek state under NSRF 2007-2013 (Region of Epirus, call 18).
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο