Publication detail

Surface Analyses of PVDF/NMP/[EMIM][TFSI] Solid Polymer Electrolyte

SEDLÁK, P. SOBOLA, D. GAJDOŠ, A. DALLAEV, R. NEBOJSA, A. KUBERSKÝ, P.

Original Title

Surface Analyses of PVDF/NMP/[EMIM][TFSI] Solid Polymer Electrolyte

Type

journal article in Web of Science

Language

English

Original Abstract

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 β-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.

Keywords

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

Authors

SEDLÁK, P.; SOBOLA, D.; GAJDOŠ, A.; DALLAEV, R.; NEBOJSA, A.; KUBERSKÝ, P.

Released

11. 8. 2021

Publisher

MDPI

Location

Basel, Switzerland

ISBN

2073-4360

Periodical

Polymers

Year of study

13

Number

16

State

Swiss Confederation

Pages from

1

Pages to

16

Pages count

16

URL

https://www.mdpi.com/2073-4360/13/16/2678

Full text in the Digital Library

http://hdl.handle.net/11012/201005

BibTex

@article{BUT172231,
  author="Petr {Sedlák} and Dinara {Sobola} and Adam {Gajdoš} and Rashid {Dallaev} and Alois {Nebojsa} and Petr {Kuberský}",
  title="Surface Analyses of PVDF/NMP/[EMIM][TFSI] Solid Polymer Electrolyte",
  journal="Polymers",
  year="2021",
  volume="13",
  number="16",
  pages="1--16",
  doi="10.3390/polym13162678",
  issn="2073-4360",
  url="https://www.mdpi.com/2073-4360/13/16/2678"
}