Durability study of platinum nanoparticles supported on gas-phase synthesized graphene in oxygen reduction reaction conditions

• Published in: Applied surface science Vol. 467-468; pp. 1181 - 1186
• Main Authors: Bertin, Erwan, Münzer, Adrian, Reichenberger, Sven, Streubel, Rene, Vinnay, Thomas, Wiggers, Hartmut, Schulz, Christof, Barcikowski, Stephan, Marzun, Galina
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.02.2019
• Subjects: Gas-phase synthesis; Graphene; Microwave plasma reactor; Oxygen reduction reaction; Platinum nanoparticles; Pulsed laser ablation in liquids; Gas-phase synthesis; Pulsed laser ablation in liquids; Platinum nanoparticles; Graphene; Oxygen reduction reaction; Microwave plasma reactor
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2018.10.061

[Display omitted] •Laser-generated ligand-free Pt nanoparticles as benchmarking catalyst.•Homogeneous particle distribution on almost defect-free gas phase synthesized graphene.•Graphene supported Pt nanoparticles show enhanced stability during ORR.•Improved stability is tentatively attributed to better corrosion resistance. Ligand-free platinum nanoparticles were prepared by pulsed laser ablation in liquids (PLAL) and employed as a benchmarking catalyst to evaluate the durability of a new gas-phase synthesized graphene support in oxygen reduction conditions. Raman measurements showed that the graphene, as compared to Vulcan, was almost defect free. Transmission electron microscopy and initial electrochemically active surface area measurements confirmed good dispersion of the catalysts on both supports. During durability tests, graphene supported Pt nanoparticles showed much better ECSA retention (75% on graphene as compared to 38% on Vulcan), ultimately retaining a higher ECSA than a commercial sample subjected to the same procedure.