at Google ScholarTitle data
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.
Vol. 43
(2026)
Issue 6
.
- e00238.
ISSN 1521-4117
DOI: https://doi.org/10.1002/ppsc.202500238
Abstract in another language
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.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Keywords: | Fe-MIL MOF; MOF-polymer hybrid composite; particle dispersion; proton conductivity; proton exchange membrane; small-angle X-ray scattering (SAXS) |
| Institutions of the University: | Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II Profile Fields Profile Fields > Advanced Fields Profile Fields > Advanced Fields > Polymer and Colloid Science Research Institutions > Central research institutes > Bayerisches Zentrum für Batterietechnik - BayBatt Research Institutions Research Institutions > Central research institutes |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 500 Science > 540 Chemistry |
| Date Deposited: | 08 Jun 2026 05:11 |
| Last Modified: | 29 Jun 2026 07:42 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/97876 |