Novel side chain functionalized polystyrene/O-PBI blends with high alkaline stability for anion exchange membrane water electrolysis (AEMWE)
Hager L, Hegelheimer M, Stonawski J, Freiberg AT, Jaramillo-Hernández C, Abellán G, Hutzler A, Böhm T, Thiele S, Kerres J (2023)
Publication Type: Journal article
Publication year: 2023
Journal
Book Volume: 11
Pages Range: 22347-22359
Journal Issue: 41
DOI: 10.1039/d3ta02978f
Abstract
We report the synthesis of a polystyrene-based anion exchange polymer bearing the cationic charge at a C6-spacer. The polymer is prepared by a functionalized monomer strategy. First, a copper halide catalyzed C-C coupling reaction between a styryl Grignard and 1,6-dibromohexane is applied, followed by quaternization with N-methylpiperidine and free radical polymerization. The novel polymer is blended with the polybenzimidazole O-PBI to yield mechanically stable blend membranes representing a new class of anion exchange membranes. In this regard, the ratio of the novel anion exchange polymer to O-PBI is varied to study the influence on water uptake and ionic conductivity. Blend membranes with IECs between 1.58 meq. OH− g−1 and 2.20 meq. OH− g−1 are prepared. The latter shows excellent performance in AEMWE, reaching 2.0 A cm−2 below 1.8 V in 1 M KOH at 70 °C, with a minor degradation rate from the start. The blend membranes show no conductivity loss after immersion in 1 M KOH at 85 °C for six weeks indicating high alkaline stability.
Authors with CRIS profile
Involved external institutions
Helmholtz-Institut Erlangen-Nürnberg für Erneuerbare Energien (HI-ERN)
Germany (DE)
Forschungszentrum Jülich / Research Centre Jülich (FZJ)
Germany (DE)
University of València / Universitat de València
Spain (ES)
Germany (DE)
Forschungszentrum Jülich / Research Centre Jülich (FZJ)
Germany (DE)
University of València / Universitat de València
Spain (ES)
How to cite
APA:
Hager, L., Hegelheimer, M., Stonawski, J., Freiberg, A.T., Jaramillo-Hernández, C., Abellán, G.,... Kerres, J. (2023). Novel side chain functionalized polystyrene/O-PBI blends with high alkaline stability for anion exchange membrane water electrolysis (AEMWE). Journal of Materials Chemistry A, 11(41), 22347-22359. https://doi.org/10.1039/d3ta02978f
MLA:
Hager, Linus, et al. "Novel side chain functionalized polystyrene/O-PBI blends with high alkaline stability for anion exchange membrane water electrolysis (AEMWE)." Journal of Materials Chemistry A 11.41 (2023): 22347-22359.
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