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Investigation of Corrosion Effects of Carbon Based Bipolar Plate Material for HT-PEMFCs

Pilinski, Nadine and Rastedt, Maren and Nagappan, Nambi Krishnan and Hickmann, Thorsten and Wagner, Peter and Dyck, Alexander (2019) Investigation of Corrosion Effects of Carbon Based Bipolar Plate Material for HT-PEMFCs. European Fuel Cell Forum, 02.-05. July 2019, Lucerne, Switzerland.

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In this study, a carbon/polyphenylene sulfide composite bipolar plate (BPP) is investigated electrochemically to determine its stability and suitability in high temperature (HT) proton exchange membrane fuel cell (PEMFC) application. BPP samples are subjected to chemical treatment at both low phosphoric acid (PA) concentration (0.5 M) at 80 ºC, and high phosphoric acid concentration (85 wt.% PA; ~14.6 M) at 160 ºC for specific duration. Chemically aged BPP samples have been electrochemically characterised by using a three-electrode cell device. For this measurement, low concentrated PA solution as well as high concentrated PA have been used as electrolyte. The device temperature has been varied with respect to PA concentration during the electrochemical characterisation. Three different potentiostatic polarisation conditions are employed such as open circuit potential (OCV), low potentiostatic polarisation (+0.1 VRHE), and high potentiostatic polarisation (0.8 VRHE). To assess the oxidation resistance behavior of the BPPs, cyclic voltammetry (CV) was recorded after the above mentioned potentiostatic polarisation measurements. In addition, the results of ante- and post-mortem examinations of BPPs were reported by using a microcomputed X-ray tomography system (μ-CT).

Item URL in elib:https://elib.dlr.de/128571/
Document Type:Conference or Workshop Item (Other)
Additional Information:Ergebnisse im Rahmen des Projekts BePPel
Title:Investigation of Corrosion Effects of Carbon Based Bipolar Plate Material for HT-PEMFCs
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Pilinski, NadineNadine.Pilinski (at) dlr.deUNSPECIFIED
Nagappan, Nambi Krishnannambikrishnan.nagappan (at) dlr.deUNSPECIFIED
Hickmann, ThorstenEisenhuthUNSPECIFIED
Wagner, Peterp.wagner (at) dlr.dehttps://orcid.org/0000-0002-5644-9881
Dyck, Alexanderalexander.dyck (at) dlr.deUNSPECIFIED
Date:July 2019
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Degradation, Micro-computed tomography, Oxidation resistance, corrosion behaviour, Open circuit voltage fluctuation, Potential polarisation
Event Title:European Fuel Cell Forum
Event Location:Lucerne, Switzerland
Event Type:international Conference
Event Dates:02.-05. July 2019
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
Deposited By: Pilinski, Nadine
Deposited On:14 Aug 2019 18:39
Last Modified:09 Apr 2020 12:50

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