Next Article in Journal
A Finite Element Stress Analysis of a Concical Triangular Connection in Implants: A New Proposal
Next Article in Special Issue
Anion Exchange Membranes for Alkaline Polymer Electrolyte Fuel Cells—A Concise Review
Previous Article in Journal
Shrinkage and Durability of Waste Brick and Recycled Concrete Aggregate Stabilized by Cement and Fly Ash
 
 
Article

Electrocatalytic Properties of Mixed-Oxide-Containing Composite-Supported Platinum for Polymer Electrolyte Membrane (PEM) Fuel Cells

1
Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network (ELKH), Magyar Tudósok körútja 2, H-1117 Budapest, Hungary
2
Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
3
Department of Inorganic and Analytical Chemistry, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
4
National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania
*
Author to whom correspondence should be addressed.
Academic Editors: Rolando Pedicini and VItaliano Chiodo
Materials 2022, 15(10), 3671; https://doi.org/10.3390/ma15103671
Received: 20 April 2022 / Revised: 10 May 2022 / Accepted: 17 May 2022 / Published: 20 May 2022
TiO2-based mixed oxide–carbon composite supports have been suggested to provide enhanced stability for platinum (Pt) electrocatalysts in polymer electrolyte membrane (PEM) fuel cells. The addition of molybdenum (Mo) to the mixed oxide is known to increase the CO tolerance of the electrocatalyst. In this work Pt catalysts, supported on Ti1−xMoxO2–C composites with a 25/75 oxide/carbon mass ratio and prepared from different carbon materials (C: Vulcan XC-72, unmodified and functionalized Black Pearls 2000), were compared in the hydrogen oxidation reaction (HOR) and in the oxygen reduction reaction (ORR) with a commercial Pt/C reference catalyst in order to assess the influence of the support on the electrocatalytic behavior. Our aim was to perform electrochemical studies in preparation for fuel cell tests. The ORR kinetic parameters from the Koutecky–Levich plot suggested a four-electron transfer per oxygen molecule, resulting in H2O. The similarity between the Tafel slopes suggested the same reaction mechanism for electrocatalysts supported by these composites. The HOR activity of the composite-supported electrocatalysts was independent of the type of carbonaceous material. A noticeable difference in the stability of the catalysts appeared only after 5000 polarization cycles; the Black Pearl-containing sample showed the highest stability. View Full-Text
Keywords: composite support; sol-gel synthesis route; TiMoOx; Pt electrocatalysts; hydrogen oxidation reaction; oxygen reduction reaction; Tafel slope; reaction mechanism; stability composite support; sol-gel synthesis route; TiMoOx; Pt electrocatalysts; hydrogen oxidation reaction; oxygen reduction reaction; Tafel slope; reaction mechanism; stability
Show Figures

Figure 1

MDPI and ACS Style

Ayyubov, I.; Tálas, E.; Salmanzade, K.; Kuncser, A.; Pászti, Z.; Neațu, Ș.; Mirea, A.G.; Florea, M.; Tompos, A.; Borbáth, I. Electrocatalytic Properties of Mixed-Oxide-Containing Composite-Supported Platinum for Polymer Electrolyte Membrane (PEM) Fuel Cells. Materials 2022, 15, 3671. https://doi.org/10.3390/ma15103671

AMA Style

Ayyubov I, Tálas E, Salmanzade K, Kuncser A, Pászti Z, Neațu Ș, Mirea AG, Florea M, Tompos A, Borbáth I. Electrocatalytic Properties of Mixed-Oxide-Containing Composite-Supported Platinum for Polymer Electrolyte Membrane (PEM) Fuel Cells. Materials. 2022; 15(10):3671. https://doi.org/10.3390/ma15103671

Chicago/Turabian Style

Ayyubov, Ilgar, Emília Tálas, Khirdakhanim Salmanzade, Andrei Kuncser, Zoltán Pászti, Ștefan Neațu, Anca G. Mirea, Mihaela Florea, András Tompos, and Irina Borbáth. 2022. "Electrocatalytic Properties of Mixed-Oxide-Containing Composite-Supported Platinum for Polymer Electrolyte Membrane (PEM) Fuel Cells" Materials 15, no. 10: 3671. https://doi.org/10.3390/ma15103671

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop