Fabrication and Performance Evaluation of Graphene-Supported PtRu Electrocatalyst for High-Temperature Electrochemical Hydrogen Purification

Bal, İlay Bilge
Durmuş, Gizem Nur Bulanık
Devrim, Yılser
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International Journal of Hydrogen Energy
The 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 °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.
Published by International Journal of Hydrogen Energy, https://doi.org/10.1016/j.ijhydene.2023.03.256, İlay Bilge Bal, Gizem Nur Bulanık Durmuş, Atılım University, Graduate School of Natural and Applied Sciences, Department of Mechanical Engineering, Ankara, Turkey, Atılım University, Department of Energy Systems Engineering, Ankara, Turkey, Yılser Devrim, Atılım University, Department of Energy Systems Engineering, Ankara, Turkey.
Electrochemical Hydrogen Purification, Bimetallic Catalyst, Graphene Nanoplatelet, Polybenzimidazole