Despot, Laura ; Andrieu‐Brunsen, Annette (2023)
Effects of the Polymer Amount and pH on Proton Transport in Mesopores.
In: Advanced Materials Interfaces, 2023, 10 (16)
doi: 10.26083/tuprints-00024322
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
Proton exchange membranes (PEMs) have various applications, such as in electrolysis technology for hydrogen generation, vanadium flow batteries for energy storage, and fuel cells for energy conversion. To increase PEM performance and expand the range of PEM applications, the underlying transport mechanisms of PEMs need to be understood. Mesoporous silica thin films are versatile model materials for proton transport investigation and are prepared with a pore size of ≈12 nm and film thickness of ≈565 nm by evaporation‐induced self‐assembly, providing an ordered, mesoporous, rigid matrix that allows us to deduce the structure‐property relationship with respect to proton conductivity. Different amounts of sulfonic acid‐bearing groups are introduced into the mesopores using the grafting‐through polymerization of sulfopropylmethacrylate. The relationship between proton transport and the pH of the surrounding solution in poly‐sulfopropylmethacrylate‐functionalized mesopores is investigated using electrochemical impedance spectroscopy. The proton conductivity is found to depend on both the proton concentration in solution and the number of proton transporting groups inside the pore, indicating the major role of charge regulation and the confinement effect on proton transport.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Despot, Laura ; Andrieu‐Brunsen, Annette |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Effects of the Polymer Amount and pH on Proton Transport in Mesopores |
| Sprache: | Englisch |
| Publikationsjahr: | 2023 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2023 |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Advanced Materials Interfaces |
| Jahrgang/Volume einer Zeitschrift: | 10 |
| (Heft-)Nummer: | 16 |
| Kollation: | 8 Seiten |
| DOI: | 10.26083/tuprints-00024322 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/24322 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | Proton exchange membranes (PEMs) have various applications, such as in electrolysis technology for hydrogen generation, vanadium flow batteries for energy storage, and fuel cells for energy conversion. To increase PEM performance and expand the range of PEM applications, the underlying transport mechanisms of PEMs need to be understood. Mesoporous silica thin films are versatile model materials for proton transport investigation and are prepared with a pore size of ≈12 nm and film thickness of ≈565 nm by evaporation‐induced self‐assembly, providing an ordered, mesoporous, rigid matrix that allows us to deduce the structure‐property relationship with respect to proton conductivity. Different amounts of sulfonic acid‐bearing groups are introduced into the mesopores using the grafting‐through polymerization of sulfopropylmethacrylate. The relationship between proton transport and the pH of the surrounding solution in poly‐sulfopropylmethacrylate‐functionalized mesopores is investigated using electrochemical impedance spectroscopy. The proton conductivity is found to depend on both the proton concentration in solution and the number of proton transporting groups inside the pore, indicating the major role of charge regulation and the confinement effect on proton transport. |
| Freie Schlagworte: | electrochemical impedance spectroscopy, mesoporous silica thin films, pH‐dependent proton transport, polyelectrolyte |
| ID-Nummer: | 2202456 |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-243220 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Makromolekulare Chemie |
| Hinterlegungsdatum: | 18 Jul 2023 12:38 |
| Letzte Änderung: | 05 Dez 2023 08:05 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Effects of the Polymer Amount and pH on Proton Transport in Mesopores. (deposited 18 Jul 2023 12:38) [Gegenwärtig angezeigt]
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