Počet záznamů: 1
Surface Analyses of PVDF/NMP/[EMIM][TFSI] Solid Polymer Electrolyte
- 1.
SYSNO ASEP 0545553 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Surface Analyses of PVDF/NMP/[EMIM][TFSI] Solid Polymer Electrolyte Tvůrce(i) Sedlák, P. (CZ)
Sobola, Dinara (UFM-A) ORCID, RID
Gajdos, A. (CZ)
Dallaev, R. (CZ)
Nebojsa, A. (CZ)
Kuberský, P. (CZ)Celkový počet autorů 6 Číslo článku 2678 Zdroj.dok. Polymers. - : MDPI - ISSN 2073-4360
Roč. 13, č. 16 (2021)Poč.str. 16 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova ionic liquid ; poly(vinylidene fluoride) ; 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ; current fluctuations ; phase-transition ; anion type ; raman ; beta ; crystallization ; pvdf ; solid polymer electrolyte ; imidazolium ionic liquids ; poly-(vinylidene fluoride) ; crystallinity ; solvent evaporation ; Raman spectroscopy ; Fourier transform infrared spectroscopy ; X-ray photoelectron spectroscopy ; secondary ion mass spectroscopy Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science Způsob publikování Open access Institucionální podpora UFM-A - RVO:68081723 UT WOS 000689760700001 EID SCOPUS 85113170453 DOI https://doi.org/10.3390/polym13162678 Anotace Thermal treatment conditions of solid polymer polymer electrolyte (SPE) were studied with respect to their impact on the surface morphology, phase composition and chemical composition of an imidazolium ionic-liquid-based SPE, namely PVDF/NMP/[EMIM][TFSI] electrolyte. These investigations were done using scanning electron microscopy, Raman spectroscopy, Fourier transform infrared spectroscopy, differential scanning calorimetry as well as X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectroscopy. A thoroughly mixed blend of polymer matrix, ionic liquid and solvent was deposited on a ceramic substrate and was kept at a certain temperature for a specific time in order to achieve varying crystallinity. The morphology of all the electrolytes consists of spherulites whose average diameter increases with solvent evaporation rate. Raman mapping shows that these spherulites have a semicrystalline structure and the area between them is an amorphous region. Analysis of FTIR spectra as well as Raman spectroscopy showed that the beta-phase becomes dominant over other phases, while DSC technique indicated decrease of crystallinity as the solvent evaporation rate increases. XPS and ToF-SIMS indicated that the chemical composition of the surface of the SPE samples with the highest solvent evaporation rate approaches the composition of the ionic liquid. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2022 Elektronická adresa https://www.mdpi.com/2073-4360/13/16/2678
Počet záznamů: 1