Oxygen Reduction at PtNi Alloys in Direct Methanol Fuel Cells—Electrode Development and Characterization

Ali Karaca, Andreas Glüsen, Klaus Wippermann, Scott Mauger, Ami C. Yang-Neyerlin, Steffen Woderich, Christoph Gimmler, Martin Müller (), Guido Bender, Horst Weller, Marcelo Carmo and Detlef Stolten
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Ali Karaca: Institute of Energy and Climate Research IEK-14: Electrochemical Process Engineering, Forschungszentrum Jülich, 52428 Jülich, Germany
Andreas Glüsen: Institute of Energy and Climate Research IEK-14: Electrochemical Process Engineering, Forschungszentrum Jülich, 52428 Jülich, Germany
Klaus Wippermann: Institute of Energy and Climate Research IEK-14: Electrochemical Process Engineering, Forschungszentrum Jülich, 52428 Jülich, Germany
Scott Mauger: National Renewable Energy Laboratory, Golden, CO 80401, USA
Ami C. Yang-Neyerlin: National Renewable Energy Laboratory, Golden, CO 80401, USA
Steffen Woderich: Center for Applied Nanotechnology CAN, Fraunhofer Institute for Applied Polymer Research IAP, 20146 Hamburg, Germany
Christoph Gimmler: Center for Applied Nanotechnology CAN, Fraunhofer Institute for Applied Polymer Research IAP, 20146 Hamburg, Germany
Martin Müller: Institute of Energy and Climate Research IEK-14: Electrochemical Process Engineering, Forschungszentrum Jülich, 52428 Jülich, Germany
Guido Bender: National Renewable Energy Laboratory, Golden, CO 80401, USA
Horst Weller: Center for Applied Nanotechnology CAN, Fraunhofer Institute for Applied Polymer Research IAP, 20146 Hamburg, Germany
Marcelo Carmo: Institute of Energy and Climate Research IEK-14: Electrochemical Process Engineering, Forschungszentrum Jülich, 52428 Jülich, Germany
Detlef Stolten: Chair for Fuel Cells, RWTH Aachen University, 52072 Aachen, Germany

Energies, 2023, vol. 16, issue 3, 1-18

Abstract: Catalyst layers made from novel catalysts must be fabricated in a way that the catalyst can function to its full potential. To characterize a PtNi alloy catalyst for use in the cathode of Direct Methanol Fuel Cells (DMFCs), the effects of the manufacturing technique, ink composition, layer composition, and catalyst loading were here studied in order to reach the maximum performance potential of the catalyst. For a more detailed understanding, beyond the DMFCs performance measurements, we look at the electrochemically active surface area of the catalyst and charge-transfer resistance, as well as the layer quality and ink properties, and relate them to the aspects stated above. As a result, we make catalyst layers with optimized parameters by ultrasonic spray coating that shows the high performance of the catalyst even when containing less Pt than commercial products. Using this approach, we can adjust the catalyst layers to the requirements of DMFCs, hydrogen fuel cells, or polymer electrolyte membrane electrolysis cells.

Keywords: fuel cells; DMFC; supported catalysts; platinum; nickel; alloys; catalyst; ORR; EIS; charge-transfer resistance (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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