Devrim, YılserHussin, Dedar EmadBudak, YagmurDevrim, YilserEnergy Systems Engineering2024-07-052024-07-05202220363-907X1099-114X10.1002/er.74182-s2.0-85118351167https://doi.org/10.1002/er.7418https://hdl.handle.net/20.500.14411/1725DEVRIM, YILSER/0000-0001-8430-0702In 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 degrees 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.eninfo:eu-repo/semantics/openAccessboron nitridecomposite membranePEM fuel cellpolybenzimidazolepolymer electrolyteArticleQ1Q146441744186WOS:000713586600001