Journalartikel

Jahr der Veröffentlichung: 2018

Seiten: 165-171

Zeitschrift: Journal of Power Sources

Bandnummer: 384

ISSN: 0378-7753

DOI Link: https://doi.org/10.1016/j.jpowsour.2018.02.055

Verlag: Elsevier

Abstract: 
This paper presents the synthesis and detailed characterization of two polyphosphazene based polymers, including different cyclic ether side groups. The final polymers were obtained by a well-known method employing a living cationic polymerization and subsequent nucleophilic substitution. The synthesized polymers Poly [(1,3-dioxane-5-oxy) (1,3-dioxolane-4-methoxy)phosphazene] (DOPP) and Poly[bis(2-Tetrahydro-3-furanoxy)phosphazene] (THFPP) were mixed with varied amounts of lithium bis(trifluoromethane)sulfonamide (LiTFSI) and the interactions between the salt and the polymer chains were studied by Fourier transform infrared (FT-IR) and differential scanning calorimetry (DSC) measurements. Electrochemical characterization was performed by electrochemical impedance spectroscopy (EIS) and direct current polarization in the temperature range of 20-60 degrees C. These measurements were utilized to calculate the lithium transference number (t(+)), the lithium conductivity (a) and its activation energy in order to elucidate the lithium transport behavior. Relatively high lithium transference numbers of 0.6 (DOPP) and 0.7 (THFPP) at 60 degrees C are found and reveal maximum lithium conductivities of 2.8.10(-6) S.cm(-1) and 9.0.10(-7) S.cm(-1) for DOPP and THFPP at 60 degrees C, respectively.

Harvard-Zitierstil: Fiedler, C., Luerssen, B., Lucht, B. and Janek, J. (2018) Synthesis and characterization of polyphosphazene electrolytes including cyclic ether side groups, Journal of Power Sources, 384, pp. 165-171. https://doi.org/10.1016/j.jpowsour.2018.02.055

APA-Zitierstil: Fiedler, C., Luerssen, B., Lucht, B., & Janek, J. (2018). Synthesis and characterization of polyphosphazene electrolytes including cyclic ether side groups. Journal of Power Sources. 384, 165-171. https://doi.org/10.1016/j.jpowsour.2018.02.055