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Comparative Investigation of Polyphenylene Sulfide Polymer-Graphite Bipolar Plates for Fuel Cell Application

Dushina, Anastasia and Satola, Barbara and Dyck, Alexander and Wagner, Peter (2019) Comparative Investigation of Polyphenylene Sulfide Polymer-Graphite Bipolar Plates for Fuel Cell Application. ECS Transactions, 92 (8), pp. 361-373. Electrochemical Society, Inc.. doi: 10.1149/09208.0361ecst. ISSN 1938-5862.

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Official URL: http://ecst.ecsdl.org/content/92/8/361.short

Abstract

In this work two compression molded commercial polyphenylene sulfide (PPS) polymer-graphite composite bipolar plates (BPPs) with different amount of polymer binder material from two different manufacturers were employed for an analytical comparative investigation using physical and electrochemical analysis. Chemical stability of BPPs was investigated after storage in phosphoric acid. Corrosion resistance and electrochemical aging of the BPPs were studied by using linear sweep voltammetry, cyclic voltammetry and electrochemical impedance spectroscopy in phosphoric acid. In order to characterize the difference in physical properties water contact angle measurement and through-plane electrical conductivity experiments were performed. The morphology of the BPPs surface was determined by scanning electron and confocal microscopy. The chemical composition was investigated by X-ray diffraction and energy dispersive X-ray spectroscopy, respectively. Comparison of BPPs revealed that the surface roughness and electrical conductivity is lower while acid uptake and hydrophilicity is higher for BPP with higher amount of PPS. Moreover, there was a trend of corrosion rate reducing for BPP with increased PPS content. This behaviour could be explained based on structure and electrical properties of the materials.

Item URL in elib:https://elib.dlr.de/129870/
Document Type:Article
Title:Comparative Investigation of Polyphenylene Sulfide Polymer-Graphite Bipolar Plates for Fuel Cell Application
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Dushina, Anastasiaanastasia.dushina (at) dlr.dehttps://orcid.org/0000-0003-4193-9906
Satola, Barbarabarbara.satola (at) dlr.dehttps://orcid.org/0000-0002-5807-1763
Dyck, Alexanderalexander.dyck (at) dlr.dehttps://orcid.org/0000-0002-5010-8226
Wagner, Peterp.wagner (at) dlr.dehttps://orcid.org/0000-0002-5644-9881
Date:2019
Journal or Publication Title:ECS Transactions
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:92
DOI :10.1149/09208.0361ecst
Page Range:pp. 361-373
Publisher:Electrochemical Society, Inc.
ISSN:1938-5862
Status:Published
Keywords:electrochemical aging, corrosion resistance, HT-PEMFC, polymer-graphite composite, degradation
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: Lorenz, Julian
Deposited On:28 Oct 2019 17:15
Last Modified:31 Oct 2020 04:35

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