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Impact of air contamination by NOx on the performance of high temperature PEM fuel cells

Schonvogel, Dana and Büsselmann, Julian and Schmies, Henrike and Langnickel, Hendrik and Wagner, Peter and Dyck, Alexander (2021) Impact of air contamination by NOx on the performance of high temperature PEM fuel cells. International Journal of Hydrogen Energy, 46 (68), pp. 33934-33947. Elsevier. doi: 10.1016/j.ijhydene.2021.07.211. ISSN 0360-3199.

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Official URL: https://www.sciencedirect.com/science/article/pii/S0360319921029682


High temperature PEM fuel cells show enhanced tolerances regarding fuel impurities like CO for use in various applications. However, the impact of air impurities like NOx on the cell behavior is not completely understood yet. This study provides systematic investigation during 500 h of operation in presence of cathode air containing 10 ppm NO or NO2. Nitrogen oxides provoke a strongly and linearly decreasing voltage of 245.3 ± 18.5 mV h^-1 and highly comparable damage that verifies similar HT-PEMFC degradation via both oxides. Cyclic voltammetry and electron microscopy reveal the loss of electrochemical catalyst surface by selectively poisoned surface and enforced catalyst particle growth. Impedance spectroscopy reveals besides increased electrode charge transfer resistances an affected proton conductivity. In contrast, SO2/NO2 impurity mixture in real occurring Ratio causes less voltage decay due to a positive SO2 impact through H2SO4 formation causing further shown and discussed effects like nitrate formation and discharge.

Item URL in elib:https://elib.dlr.de/143747/
Document Type:Article
Title:Impact of air contamination by NOx on the performance of high temperature PEM fuel cells
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schonvogel, DanaUNSPECIFIEDhttps://orcid.org/0000-0002-2485-740X
Büsselmann, JulianUNSPECIFIEDhttps://orcid.org/0000-0003-2197-6056
Schmies, HenrikeUNSPECIFIEDhttps://orcid.org/0000-0002-6565-1280
Wagner, PeterUNSPECIFIEDhttps://orcid.org/0000-0002-5644-9881
Dyck, AlexanderUNSPECIFIEDhttps://orcid.org/0000-0002-5010-8226
Date:1 October 2021
Journal or Publication Title:International Journal of Hydrogen Energy
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 33934-33947
Keywords:High temperature PEM fuel cells Membrane electrode assembly Durability Air pollution Nitrogen oxides
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - Energie und Verkehr, E - Electrochemical Processes
Location: Oldenburg
Institutes and Institutions:Institute of Networked Energy Systems > Urban and Residential Technologies
Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Büsselmann, Julian
Deposited On:13 Sep 2021 16:40
Last Modified:28 Oct 2021 11:12

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