Albostan, Ayhan

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A., Ayhan
Albostan, Ayhan
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Profesor Doktor
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ayhan.albostan@atilim.edu.tr
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Energy Systems Engineering
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6506937455
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EJJ-6290-2022

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4th International Conference on Nuclear and Renewable Energy Resources (NURER) -- OCT 26-29, 2014 -- Antalya, TURKEY3
2nd International Symposium on Materials for Energy Storage and Conversion (mESC-IS) -- SEP 26-28, 2017 -- TURKEY1
3rd International Conference on Nuclear and Renewable Energy Resources (NURER) -- MAY 20-23, 2012 -- Istanbul, TURKEY1
12th International Symposium on Hydrogen Power Theoretical and Engineering Solutions (HYPOTHESIS) -- JUN 28-30, 2017 -- Syracuse, ITALY1
Energy Conversion and Management1
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Author: Arica, Elif DamlaSubject: PEM fuel cell

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  • Thumbnail Image
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    Citation - WoS: 82
    Citation - Scopus: 92
    Graphene Based Catalyst Supports for High Temperature Pem Fuel Cell Application
    (Pergamon-elsevier Science Ltd, 2018) Devrim, Yilser; Arica, Elif Damla; Albostan, Ayhan
    In this study, the effect of graphene nanoplatelet (GNP) and graphene oxide (GO) based carbon supports on polybenzimidazole (PBI) based high temperature proton exchange membrane fuel cells (HT-PEMFCs) performances were investigated. Pt/GNP and Pt/GO catalysts were synthesized by microwave assisted chemical reduction support. X-ray diffraction (XRD), Thermogravimetric analysis (TGA), Brauner, Emmet and Teller (BET) analysis and high resolution transmission electron microscopy (HRTEM) were used to investigate the microstructure and morphology of the as-prepared catalysts. The electrochemical surface area (ESA) was studied by cyclic voltammetry (CV). The results showed deposition of smaller Pt nanoparticles with uniform distribution and higher ECSA for Pt/GNP compared to Pt/GO. The Pt/GNP and Pt/GO catalysts were tested in 25 cm(2) active area single HT-PEMFC with H-2/air at 160 degrees C without humidification. Performance evaluation in HT-PEMFC shows current densities of 0.28, 0.17 and 0.22 A/cm(2) for the Pt/GNP, Pt/C and Pt/GO catalysts based MEAs at 160 degrees C, respectively. The maximum power density was obtained for MEA prepared by Pt/GNP catalyst with H-2/Air dry reactant gases as 0.34, 0.40 and 0.46 W/cm(2) at 160 degrees C, 175 degrees C and 190 degrees C, respectively. Graphene based catalyst supports exhibits an enhanced HT-PEMFC performance in both low and high current density regions. The results indicate the graphene catalyst support could be utilized as the catalyst support for HT-PEMFC application. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.