Highly-fluorous pyrazolide-based lithium salt in PVDF-HFP as solid polymer electrolyte
Journal article, 2016
For the first time, the concept of fluorophilicity f(i) is adapted to the development of a novel solid polymer electrolyte (SPE) by computationally evaluating a new class of lithium salts, the perfluoroalkylated pyrazolides. An SPE consisting solely of poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) and different concentrations of highly-fluorous lithium [5-(perfluorobutyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl] trifluoroborate (LiPFAPB14) is reported. Membranes with a salt concentration up to 80 wt.% are prepared and are investigated by 3D laser scanning confocal microscopy, scanning electron microscopy (SEM) and differential scanning calorimetry (DSC) concerning the correlation between the LiPFAPB14 salt concentrations with the miscibility in PVDF-HFP. Membrane performances as SPE are evaluated by impedance spectroscopy revealing ionic conductivities of 1.4 x 10(-4) S cm(-1) at 90 degrees C with 80 wt.% LiPFAPB14.
war mjs
journal of the american chemical society
transport
conductivity
fluorophilicity
1985
Physics
semiempirical methods
self-nucleation
1990
war mjs
membranes
v107
p3902
Chemistry
pan
v29
inorganic chemistry
in-salt
mixtures
p3881
ion batteries
Author
E. Cznotka
University of Münster
Steffen Jeschke
Chalmers, Physics, Condensed Matter Physics
M. Grunebaum
University of Münster
H. D. Wiemhofer
University of Münster
Solid State Ionics
0167-2738 (ISSN)
Vol. 292 45-51Subject Categories (SSIF 2011)
Condensed Matter Physics
DOI
10.1016/j.ssi.2016.05.007