Chemically synthesized reduced graphene oxide-carbon black based hybrid catalysts for PEM fuel cells |
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| Affiliation: | 1. Department of Nanoscience and Nanoengineering, Atatürk University, Erzurum, 25240, Turkey;2. Department of Chemical Engineering, Atatürk University, Erzurum, 25240, Turkey;3. Department of Physics, Atatürk University, Erzurum, 25240, Turkey;1. National Research Centre “Kurchatov Institute”, 1, Kurchatov sq., Moscow, 123182, Russia;2. National Research University “Moscow Power Engineering Institute”, 14, Krasnokazarmennaya str., Moscow, 111250, Russia;3. DELTARUS Limited, 2/5(B), Likhachevsky alley, Dolgoprudny, Moscow Region, 141700, Russia;1. Sabanci University, Nanotechnology Research and Application Center (SUNUM), 34956, Istanbul, Turkey;2. Sabanci University, Faculty of Engineering & Natural Sciences, 34956, Istanbul, Turkey;1. Danish Power Systems, DK-3490, Kvistgård, Denmark;2. Department of Chemical Engineering, Middle East Technical University, 06800, Ankara, Turkey;3. Department of Chemical Engineering, Ondokuz Mayis University, 55139, Samsun, Turkey;1. Department of Nanoscience and Nanoengineering, Atatürk University, Erzurum 25240, Turkey;2. Sabanci University Nanotechnology Research & Application Center (SUNUM), Istanbul 34956, Turkey;3. Faculty of Engineering & Natural Sciences, Sabanci University, Istanbul 34956, Turkey;4. Department of Chemical Engineering, Atatürk University, Erzurum 25240, Turkey |
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| Abstract: | In this study, hybrid (synthesized rGO and commercial carbon black (CB) in various weight ratios) supported Pt catalysts were synthesized by using the supercritical carbon dioxide deposition (scCO2) technique for PEM fuel cells. In hybrid materials, rGO to CB weight ratios were changed in between 90:10 to 50:50 which were compared to their plain materials. The physicochemical and the electrochemical characteristics of the materials were examined by using BET, XRD, TGA, TEM, contact angle and roughness measurements, CV and PEM fuel cell performance tests. All these characterizations showed that the hybrid supported Pt catalysts were successfully synthesized. TEM images of the catalysts confirmed the highly dispersed and small nanoparticle formation (1.9–2.9 nm) via scCO2 deposition technique. Among the hybrid supported catalysts, catalyst having rGO:CB ratio of 70:30 showed the best PEM fuel cell performance. Electrochemical characterization either fuel cell performance test or CV results indicated significantly enhancement in activity with an increase in CB amount in the support. |
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| Keywords: | PEM fuel cell Reduced graphene oxide Carbon black Hybrid support material Supercritical carbon dioxide deposition |
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