Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 3467 |
| Fachzeitschrift | Polymers |
| Jahrgang | 13 |
| Ausgabenummer | 20 |
| Publikationsstatus | Veröffentlicht - 9 Okt. 2021 |
Abstract
As an alternative to common perfluorosulfonic acid-based polyelectrolytes, we present the synthesis and characterization of proton exchange membranes based on two different concepts: (i) Covalently bound multiblock-co-ionomers with a nanophase-separated structure exhibit tunable properties depending on hydrophilic and hydrophobic components’ ratios. Here, the blocks were synthesized individually via step-growth polycondensation from either partially fluorinated or sulfonated aromatic monomers. (ii) Ionically crosslinked blend membranes of partially fluorinated polybenzimidazole and pyridine side-chain-modified polysulfones combine the hydrophilic component’s high proton conductivities with high mechanical stability established by the hydrophobic components. In addition to the polymer synthesis, membrane preparation, and thorough characterization of the obtained materials, hydrogen permeability is determined using linear sweep voltammetry. Furthermore, initial in situ tests in a PEM electrolysis cell show promising cell performance, which can be increased by optimizing electrodes with regard to binders for the respective membrane material.
ASJC Scopus Sachgebiete
- Chemie (insg.)
- Werkstoffwissenschaften (insg.)
- Polymere und Kunststoffe
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in: Polymers, Jahrgang 13, Nr. 20, 3467, 09.10.2021.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - H+-conducting aromatic multiblock copolymer and blend membranes and their application in pem electrolysis
AU - Bender, Johannes
AU - Mayerhöfer, Britta
AU - Trinke, Patrick
AU - Bensmann, Boris
AU - Hanke-Rauschenbach, Richard
AU - Krajinovic, Katica
AU - Thiele, Simon
AU - Kerres, Jochen
N1 - Funding Information: Funding: We gratefully acknowledge the financial support from “Bundesministerium für Bildung und Forschung” (BMBF, Grant No. /03SF0536 F, B, and C) in the framework of the project “POWER-MEE”.
PY - 2021/10/9
Y1 - 2021/10/9
N2 - As an alternative to common perfluorosulfonic acid-based polyelectrolytes, we present the synthesis and characterization of proton exchange membranes based on two different concepts: (i) Covalently bound multiblock-co-ionomers with a nanophase-separated structure exhibit tunable properties depending on hydrophilic and hydrophobic components’ ratios. Here, the blocks were synthesized individually via step-growth polycondensation from either partially fluorinated or sulfonated aromatic monomers. (ii) Ionically crosslinked blend membranes of partially fluorinated polybenzimidazole and pyridine side-chain-modified polysulfones combine the hydrophilic component’s high proton conductivities with high mechanical stability established by the hydrophobic components. In addition to the polymer synthesis, membrane preparation, and thorough characterization of the obtained materials, hydrogen permeability is determined using linear sweep voltammetry. Furthermore, initial in situ tests in a PEM electrolysis cell show promising cell performance, which can be increased by optimizing electrodes with regard to binders for the respective membrane material.
AB - As an alternative to common perfluorosulfonic acid-based polyelectrolytes, we present the synthesis and characterization of proton exchange membranes based on two different concepts: (i) Covalently bound multiblock-co-ionomers with a nanophase-separated structure exhibit tunable properties depending on hydrophilic and hydrophobic components’ ratios. Here, the blocks were synthesized individually via step-growth polycondensation from either partially fluorinated or sulfonated aromatic monomers. (ii) Ionically crosslinked blend membranes of partially fluorinated polybenzimidazole and pyridine side-chain-modified polysulfones combine the hydrophilic component’s high proton conductivities with high mechanical stability established by the hydrophobic components. In addition to the polymer synthesis, membrane preparation, and thorough characterization of the obtained materials, hydrogen permeability is determined using linear sweep voltammetry. Furthermore, initial in situ tests in a PEM electrolysis cell show promising cell performance, which can be increased by optimizing electrodes with regard to binders for the respective membrane material.
KW - Acid–base blend membranes
KW - Electrolyzer
KW - Hydrogen crossover
KW - MEA
KW - Multiblock-co-ionomers
KW - Partially fluorinated and sulfonated poly(arylene)s
KW - PEM
UR - http://www.scopus.com/inward/record.url?scp=85117188711&partnerID=8YFLogxK
U2 - 10.3390/polym13203467
DO - 10.3390/polym13203467
M3 - Article
AN - SCOPUS:85117188711
VL - 13
JO - Polymers
JF - Polymers
SN - 2073-4360
IS - 20
M1 - 3467
ER -