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Kamble, Riddhi ; Maity, Aniket ; Agarwal, Seema ; Pradhan, Debabrata ; Banerjee, Susanta:
Tailoring Proton Transport in s-PVDF-HFP Membranes Through MOF Integration : A Route to Nafion-Free Fuel Cell Electrolytes.
In: Particle & Particle Systems Characterization.
Bd. 43
(2026)
Heft 6
.
- e00238.
ISSN 1521-4117
DOI: https://doi.org/10.1002/ppsc.202500238
Abstract
Developing durable, Nafion-free proton exchange membranes (PEMs) with high proton conductivity and long-term chemical resilience remains a critical challenge in fuel cell technology. In this work, sulfonated PVDF-HFP composite membranes incorporating variable loadings of sulfonated Fe-MIL-88B-NH2 (5, 7, and 9 wt.%) were synthesized to investigate the influence of MOF dispersion on mechanical integrity, oxidative stability, and proton-transport behavior. Structural analysis revealed that low to moderate MOF incorporation significantly improved the membrane microstructure by introducing well-connected hydrophilic channels while maintaining polymer flexibility. Mechanical testing demonstrated that 5 and 7 wt.% composites displayed enhanced ductility and toughness compared to pristine polymer, whereas excessive loading (9 wt.%) led to filler agglomeration, promoting premature failure. Proton conductivity measurements showed a clear temperature-activated conduction mechanism, with the 7 wt.% membrane exhibiting the highest conductivity across all temperatures. Although the lowest activation energy was observed at 9 wt.% loading, the 7 wt.% membrane exhibited the highest conductivity due to optimized microstructure and transport pathways. Nyquist impedance spectra further supported these findings, showing minimal bulk resistance for the 7 wt.% membrane. Additionally, oxidative stability tests demonstrated that controlled MOF dispersion enhances resistance to radical-induced degradation, with the 7 wt.% composite offering the best balance between stability and performance. Overall, this study highlights the critical role of optimized MOF distribution in achieving high-performance composite PEMs and establishes PHF-MIL88-7 as a promising candidate for Nafion-free fuel cell applications.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II Profilfelder > Advanced Fields > Polymer- und Kolloidforschung |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Eingestellt am: | 08 Jun 2026 05:11 |
| Letzte Änderung: | 08 Jun 2026 05:11 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/97876 |