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Phase behavior of binary and ternary fluoropolymer (PVDF-HFP) solutions for single-ion conductors
A fluoropolymer poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) has a dielectric constant of ∼11, providing charge screening effects. Hence, this highly polar PVDF-HFP material has been employed as a matrix for solid polymer electrolytes (SPEs). In this study, the phase behavior of binar...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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The Royal Society of Chemistry
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9344283/ https://www.ncbi.nlm.nih.gov/pubmed/35975057 http://dx.doi.org/10.1039/d2ra04158h |
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author | Kim, Jung Yong |
author_facet | Kim, Jung Yong |
author_sort | Kim, Jung Yong |
collection | PubMed |
description | A fluoropolymer poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) has a dielectric constant of ∼11, providing charge screening effects. Hence, this highly polar PVDF-HFP material has been employed as a matrix for solid polymer electrolytes (SPEs). In this study, the phase behavior of binary PVDF-HFP solutions was analyzed using the Flory–Huggins theory, in which ethylene carbonate, propylene carbonate, dimethyl carbonate, γ-butyrolactone, and acetone were employed as model solvents. In particular, for the binary PVDF-HFP/acetone system, the solid–liquid and liquid–liquid phase transitions were qualitatively described. Then, the phase diagram for ternary acetone/PVDF-HFP/polyphenolate systems was constructed, in which the binodal, spinodal, tie-line, and critical point were included. Finally, when a polyelectrolyte lithium polyphenolate was mixed with the PVDF-HFP matrix, it formed a single-ion conductor with a Li(+) transference number of 0.8 at 23 °C. In the case of ionic conductivity, it was ∼10(−5) S cm(−1) in solid state and ∼10(−4) S cm(−1) in gel state, respectively. |
format | Online Article Text |
id | pubmed-9344283 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-93442832022-08-15 Phase behavior of binary and ternary fluoropolymer (PVDF-HFP) solutions for single-ion conductors Kim, Jung Yong RSC Adv Chemistry A fluoropolymer poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) has a dielectric constant of ∼11, providing charge screening effects. Hence, this highly polar PVDF-HFP material has been employed as a matrix for solid polymer electrolytes (SPEs). In this study, the phase behavior of binary PVDF-HFP solutions was analyzed using the Flory–Huggins theory, in which ethylene carbonate, propylene carbonate, dimethyl carbonate, γ-butyrolactone, and acetone were employed as model solvents. In particular, for the binary PVDF-HFP/acetone system, the solid–liquid and liquid–liquid phase transitions were qualitatively described. Then, the phase diagram for ternary acetone/PVDF-HFP/polyphenolate systems was constructed, in which the binodal, spinodal, tie-line, and critical point were included. Finally, when a polyelectrolyte lithium polyphenolate was mixed with the PVDF-HFP matrix, it formed a single-ion conductor with a Li(+) transference number of 0.8 at 23 °C. In the case of ionic conductivity, it was ∼10(−5) S cm(−1) in solid state and ∼10(−4) S cm(−1) in gel state, respectively. The Royal Society of Chemistry 2022-08-02 /pmc/articles/PMC9344283/ /pubmed/35975057 http://dx.doi.org/10.1039/d2ra04158h Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Kim, Jung Yong Phase behavior of binary and ternary fluoropolymer (PVDF-HFP) solutions for single-ion conductors |
title | Phase behavior of binary and ternary fluoropolymer (PVDF-HFP) solutions for single-ion conductors |
title_full | Phase behavior of binary and ternary fluoropolymer (PVDF-HFP) solutions for single-ion conductors |
title_fullStr | Phase behavior of binary and ternary fluoropolymer (PVDF-HFP) solutions for single-ion conductors |
title_full_unstemmed | Phase behavior of binary and ternary fluoropolymer (PVDF-HFP) solutions for single-ion conductors |
title_short | Phase behavior of binary and ternary fluoropolymer (PVDF-HFP) solutions for single-ion conductors |
title_sort | phase behavior of binary and ternary fluoropolymer (pvdf-hfp) solutions for single-ion conductors |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9344283/ https://www.ncbi.nlm.nih.gov/pubmed/35975057 http://dx.doi.org/10.1039/d2ra04158h |
work_keys_str_mv | AT kimjungyong phasebehaviorofbinaryandternaryfluoropolymerpvdfhfpsolutionsforsingleionconductors |