SYNTHESIS AND CHARACTERIZATION OF MWCNT-SUPPORTED PBI MEMBRANES FOR HT-PEM FUEL CELLS

Mehmet Turan Görüryılmaz*, Sibel Özenler, Bihter Zeytuncu, Nilgün Karatepe

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Özet

Polybenzimidazole (PBI) membranes are highly sought after for HT-PEMFCs due to their thermal stability, mechanical strength and protonic conductivity. In this study, PBI polymer and the membranes were synthesized for HT-PEMFC applications. Then, the polymer was characterized by using NMR and TG analyses. All the characteristic peaks were observed in the NMR results and PBI polymer decompose around 550 °C. After the synthesis, pristine and multi-walled carbon nanotube (MWCNT) supported membranes were prepared, doped with phosphoric acid and characterized by using TGA, FT-IR, XRD, SEM and EIS tests. The characteristic bonds of the polymer for both undoped and doped membranes were seen in FT-IR results. XRD results showed the semi-crystalline structure of the polymer. SEM results enabled to observe the homogeneous dispersion of the MWCNTs within the membrane. Finally, EIS tests were carried out in anhydrous conditions. The conductivities were obtained for pristine PBI membrane as 0.0518 S/cm, 0.0667 S/cm and 0.0895 S/cm, respectively. For the 0.5wt% PBI/MWCNT membrane, they were calculated as 0.0401 S/cm, 0.0586 S/cm and 0.0613 S/cm for 120 °C, 140 °C and 160 °C, respectively. For the 1wt% PBI/MWCNT membrane, slightly higher conductivities were obtained as 0.0429 S/cm, 0.0621 S/cm and 0.0655 S/cm for the temperatures 120 °C, 140 °C and 160 °C, respectively.

Orijinal dilİngilizce
Ana bilgisayar yayını başlığıProceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference
Ana bilgisayar yayını alt yazısıBridging Continents by H2
EditörlerIbrahim Dincer, Can Ozgur Colpan, Mehmet Akif Ezan
YayınlayanInternational Association for Hydrogen Energy, IAHE
Sayfalar684-686
Sayfa sayısı3
ISBN (Elektronik)9786250008430
Yayın durumuYayınlandı - 2022
Etkinlik23rd World Hydrogen Energy Conference: Bridging Continents by H2, WHEC 2022 - Istanbul, Turkey
Süre: 26 Haz 202230 Haz 2022

Yayın serisi

AdıProceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2

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???event.eventtypes.event.conference???23rd World Hydrogen Energy Conference: Bridging Continents by H2, WHEC 2022
Ülke/BölgeTurkey
ŞehirIstanbul
Periyot26/06/2230/06/22

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Publisher Copyright:
© 2022 Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2. All rights reserved.

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