Highly-fluorous pyrazolide-based lithium salt in PVDF-HFP as solid polymer electrolyte
Artikel i vetenskaplig tidskrift, 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.
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journal of the american chemical society
transport
conductivity
fluorophilicity
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Physics
semiempirical methods
self-nucleation
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membranes
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p3902
Chemistry
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inorganic chemistry
in-salt
mixtures
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ion batteries
Författare
E. Cznotka
Westfaelische Wilhelms-Universität Münster
Steffen Jeschke
Chalmers, Fysik, Kondenserade materiens fysik
M. Grunebaum
Westfaelische Wilhelms-Universität Münster
H. D. Wiemhofer
Westfaelische Wilhelms-Universität Münster
Solid State Ionics
0167-2738 (ISSN)
Vol. 292 45-51Ämneskategorier (SSIF 2011)
Den kondenserade materiens fysik
DOI
10.1016/j.ssi.2016.05.007