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Influence of ammonia contamination on HT-PEM fuel cell platinum catalyst

Dushina, Anastasia and Schonvogel, Dana and Fischer, Yannis and Büsselmann, Julian and Dyck, Alexander and Wagner, Peter (2020) Influence of ammonia contamination on HT-PEM fuel cell platinum catalyst. In: ECS Transactions. PRiME 2020, 4-9 Oct 2020, USA. doi: 10.1149/09809.0537ecst.

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In this work the effect of NH3 contamination on platinum catalyst has been investigated in the frame of a high temperature polymer electrolyte membrane single fuel cell as well as rotating ring disk electrode measurements (RRDE) using phosphoric acid electrolyte. In the first part single cell operation in presence of 10 ppm NH3 in the cathode gas combined with electrochemical impedance spectroscopy was performed with a fuel cell test bench. In the second part of work RRDE experiments were accomplished in the presence of 10 and 100 ppm of NH4H2PO4 contamination in 0.5 mol L-1 H3PO4. It was revealed that platinum catalyst is strongly affected by ammonia contamination while the increasing ammonium concentrations reduce the electrochemical surface area (ECSA) of the Pt catalyst. These observed losses of ECSA were associated to adsorbed nitrogen compounds on the catalyst surface.

Item URL in elib:https://elib.dlr.de/136324/
Document Type:Conference or Workshop Item (Speech)
Title:Influence of ammonia contamination on HT-PEM fuel cell platinum catalyst
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Dushina, Anastasiaanastasia.dushina (at) dlr.dehttps://orcid.org/0000-0003-4193-9906
Schonvogel, Danadana.schonvogel (at) dlr.dehttps://orcid.org/0000-0002-2485-740X
Fischer, YannisYannis.Fischer (at) dlr.deUNSPECIFIED
Büsselmann, Julianjulian.buesselmann (at) dlr.dehttps://orcid.org/0000-0003-2197-6056
Dyck, Alexanderalexander.dyck (at) dlr.dehttps://orcid.org/0000-0001-9760-9493
Wagner, Peterp.wagner (at) dlr.dehttps://orcid.org/0000-0002-5644-9881
Date:September 2020
Journal or Publication Title:ECS Transactions
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1149/09809.0537ecst
Keywords:Ammonia contamination, polymer electrolyte membrane fuel cells, Pt catalyst, rotating ring disk electrode
Event Title:PRiME 2020
Event Location:USA
Event Type:international Conference
Event Dates:4-9 Oct 2020
HGF - Research field:Energy
HGF - Program:Technology, Innovation and Society
HGF - Program Themes:Renewable Energy and Material Resources for Sustainable Futures - Integrating at Different Scales
DLR - Research area:Energy
DLR - Program:E SY - Energy Systems Analysis
DLR - Research theme (Project):E - Energy Systems Technology (old)
Location: Oldenburg
Institutes and Institutions:Institute of Networked Energy Systems > Fuel Cells
Deposited By: Dushina, Anastasia
Deposited On:20 Oct 2020 11:10
Last Modified:11 Jan 2021 17:32

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