An effective electrocatalyst based on platinum nanoparticles supported with graphene nanoplatelets and carbon black hybrid for PEM fuel cells
| Autor: | Selmiye Alkan Gürsel, Solen Kinayyigit, Ece Arici, Begüm Yarar Kaplan, Ahmet Musap Mert |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
T174.7 Nanotechnology
Materials science Energy Engineering and Power Technology Proton exchange membrane fuel cell TA Engineering (General). Civil engineering (General) 02 engineering and technology Electrolyte 010402 general chemistry Electrocatalyst Platinum nanoparticles TP Chemical technology 01 natural sciences law.invention T Technology (General) law High-resolution transmission electron microscopy chemistry.chemical_classification Renewable Energy Sustainability and the Environment Graphene Q Science (General) Carbon black Polymer QD Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Fuel Technology Chemical engineering chemistry 0210 nano-technology |
| Zdroj: | International Journal of Hydrogen Energy. 44:14175-14183 |
| ISSN: | 0360-3199 |
| Popis: | A facile synthesis at room temperature and at solid-state directly on the support yielded small, homogeneous and well-dispersed Pt nanoparticles (NPs) on CB-carbon black, GNPgraphene nanoplatelets, and CB-GNP-50:50 hybrid support. Synthesized Pt/CB, Pt/GNP and Pt/CB:GNP NPs were used as electrocatalysts for polymer electrolyte membrane fuel cell (PEMFC) reactions. HRTEM results displayed very small, homogeneous and well-dispersed NPs with 1.7, 2.0 and 4.2 nm mean-diameters for the Pt/CB-GNP, Pt/GNP and Pt/CB electrocatalysts, respectively. Electrocatalysts were also characterized by RAMAN, XRD, BET and CV techniques. ECSA values indicated better activity for graphene-based supports with 19 m(2) g(Pt)(-1) for Pt/GNP and 55 m(2) g(Pt)(-1) for Pt/CB-GNP compared to 10 m(2)g(Pt)(-1) for Pt/CB. Oxygen reduction reaction (ORR) studies and fuel cell tests were in parallel with these results where highest maximum power density of 377 mW cm(-2) was achieved with Pt/CB-GNP hybrid electrocatalyst. Both fuel cell and ORR studies for Pt/CB-GNP indicated better dispersion of NPs on the support and efficient fuel cell performance that is believed to be due to the prevention of restacking of GNP by CB. To the best of our knowledge, Pt/GNP and Pt/CB-GNP electrocatalysts are the first in literature to be synthesized with the organometallic mild synthesis method using Pt(dba)(3) precursor for the PEMFC applications. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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