Bal, Ilay BilgeDurmus, Gizem Nur BulanikDevrim, YilserMechanical EngineeringEnergy Systems Engineering2024-07-052024-07-05202310360-31991879-348710.1016/j.ijhydene.2023.03.2562-s2.0-85151569241https://doi.org/10.1016/j.ijhydene.2023.03.256https://hdl.handle.net/20.500.14411/2212DEVRIM, YILSER/0000-0001-8430-0702The main aim of this study is to investigate the high-temperature electrochemical hydrogen purification (HT-ECHP) performances of graphene nanoplatelet (GNP) support material decorated with platinum (Pt) and platinum-ruthenium (PtRu) nanoparticles prepared by microwave irradiation technique. Prepared catalysts coupled to the phosphoric acid doped polybenzimidazole (PBI) membrane for HT-ECHP application. The structural and electrochemical properties of the catalysts were examined by thermogravimetric analysis (TGA), X-Ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Transition electron microscopy (TEM) and cyclic voltammetry (CV) analyses. The characterization results indicate that the catalysts provided the necessary properties for HT-ECHP application. The HT-ECHP performances are investigated with reformate gas mixture containing hydrogen (H2), carbon dioxide (CO2) and carbon monoxide (CO) in the range of 140-180 & DEG;C. The results show that the electrochemical purification performances of the catalysts increase with increasing operating temperature. The highest H2 purification performance is obtained with PtRu/GNP catalyst. The high electrochemical H2 purification performance of the PtRu/GNP catalyst can be attributed to the strong synergistic interactions between Pt and Ru particles decorated on the GNP. These results advocate that the PtRu/GNP catalyst is a hopeful catalyst for HT-ECHP application. & COPY; 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.eninfo:eu-repo/semantics/closedAccessElectrochemical hydrogenpurificationBimetallic catalystGraphene nanoplateletPolybenzimidazoleArticleQ148632436924384WOS:001033891000001