Volume 46, Issue 4 pp. 4174-4186
RESEARCH ARTICLE

Development and performance analysis of polybenzimidazole/boron nitride composite membranes for high-temperature PEM fuel cells

Dedar Emad Hussin

Dedar Emad Hussin

Faculty of Engineering, Chemical Engineering, Atilim University, Ankara, Turkey

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Yağmur Budak

Yağmur Budak

Faculty of Engineering, Mechanical Engineering, Atilim University, Ankara, Turkey

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Yılser Devrim

Corresponding Author

Yılser Devrim

Faculty of Engineering, Energy Systems Engineering, Atilim University, Ankara, Turkey

Correspondence

Yılser Devrim, Faculty of Engineering, Energy Systems Engineering, Atilim University, 0686 Ankara, Turkey.

Email: [email protected]

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First published: 02 November 2021
Citations: 5

Summary

In this research, polybenzimidazole/boron nitride (PBI/BN) based composite membranes have been prepared for high-temperature PEM fuel cell (HT-PEMFC). BN was preferred because of its superior thermal robustness, high chemical stability, non-conductor property, and high plasticizer characteristic. The loading of BN in the composite membrane was studied between 2.5 to 10 wt%. The composite membranes were characterized using TGA, DSC, XRD, SEM, mechanical tests, acid doping/leaching, and proton conductivity measurements. The highest conductivity of 0.260 S/cm was found for PBI/BN-2.5 membrane at 180°C. It has been determined that the PBI/BN-2.5 membrane has higher performance than the PBI membrane according to the HT-PEMFC tests performed with Hydrogen and dry air. The heightened HT-PEMFC performance can be ascribed to interactive effects between BN particles and the PBI polymer matrix. PBI/BN composite membranes show a good perspective in the high-temperature PEMFC applications.

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