Novel side chain functionalized polystyrene/O-PBI blends with high alkaline stability for anion exchange membrane water electrolysis (AEMWE).

Autor:	Hager L; Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11) Cauerstr. 1 91058 Erlangen Germany l.hager@fz-juelich.de.; Department of Chemical and Biological Engineering, Friedrich Alexander Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany., Hegelheimer M; Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11) Cauerstr. 1 91058 Erlangen Germany l.hager@fz-juelich.de.; Department of Chemical and Biological Engineering, Friedrich Alexander Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany., Stonawski J; Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11) Cauerstr. 1 91058 Erlangen Germany l.hager@fz-juelich.de.; Department of Chemical and Biological Engineering, Friedrich Alexander Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany., Freiberg ATS; Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11) Cauerstr. 1 91058 Erlangen Germany l.hager@fz-juelich.de.; Department of Chemical and Biological Engineering, Friedrich Alexander Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany., Jaramillo-Hernández C; Institute of Molecular Science, University of Valencia c/ Catedrático José Beltrán 2 Paterna Spain., Abellán G; Institute of Molecular Science, University of Valencia c/ Catedrático José Beltrán 2 Paterna Spain., Hutzler A; Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11) Cauerstr. 1 91058 Erlangen Germany l.hager@fz-juelich.de., Böhm T; Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11) Cauerstr. 1 91058 Erlangen Germany l.hager@fz-juelich.de., Thiele S; Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11) Cauerstr. 1 91058 Erlangen Germany l.hager@fz-juelich.de.; Department of Chemical and Biological Engineering, Friedrich Alexander Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany., Kerres J; Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11) Cauerstr. 1 91058 Erlangen Germany l.hager@fz-juelich.de.; Chemical Resource Beneficiation Faculty of Natural Sciences, North-West University Potchefstroom 2520 South Africa.
Jazyk:	angličtina
Zdroj:	Journal of materials chemistry. A [J Mater Chem A Mater] 2023 Oct 11; Vol. 11 (41), pp. 22347-22359. Date of Electronic Publication: 2023 Oct 11 (Print Publication: 2023).
DOI:	10.1039/d3ta02978f
Abstrakt:	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. Competing Interests: There are no conflicts of interest to declare. (This journal is © The Royal Society of Chemistry.)
Databáze:	MEDLINE
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