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Low Cost Bipolar Plates for Large Scale PEM Electrolyzers

Gago, Aldo and Ansar, Asif and Gazdzicki, Pawel and Wagner, Norbert and Arnold, Johannes and Friedrich, Kaspar Andreas (2014) Low Cost Bipolar Plates for Large Scale PEM Electrolyzers. ECS Transactions, 64 (3), pp. 1039-1048. Electrochemical Society, Inc.. DOI: 10.1149/06403.1039ecst ISSN 1938-5862

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Official URL: http://ecst.ecsdl.org/content/64/3/1039.abstract

Abstract

PEM electrolysis is a promising technology for large scale storage of surplus electricity, though it is still costly mainly due to the manufacture of large area and high purity Ti bipolar plates (BPP). In this work we have developed an Au/Ti coating deposited by electrodeposition/thermal spraying on stainless steel BPP. The coating was physically characterized with SEM and electro-chemically evaluated in simulated anode conditions. Interfacial contact resistance (ICR) vs. compaction pressure measurements showed that the coating is highly conductive. It successfully protected the stainless steel substrate from corrosion. However, the Au modification detached after 6 h of application of a potential of 2 V vs. RHE. Consequently the Au modification has to be replaced by either another precious metal or a corrosion resistant electro-ceramic. The coating reported herein could have a large impact on the cost of PEM electrolyzers for large scale electricity storage from renewables.

Item URL in elib:https://elib.dlr.de/92936/
Document Type:Article
Title:Low Cost Bipolar Plates for Large Scale PEM Electrolyzers
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gago, Aldoaldo.gago (at) dlr.deUNSPECIFIED
Ansar, Asifasif.ansar (at) dlr.deUNSPECIFIED
Gazdzicki, Pawelpawel.gazdzicki (at) dlr.deUNSPECIFIED
Wagner, Norbertnorbert.wagner (at) dlr.deUNSPECIFIED
Arnold, Johannesjohannes.arnold (at) dlr.deUNSPECIFIED
Friedrich, Kaspar Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Date:14 October 2014
Journal or Publication Title:ECS Transactions
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:64
DOI :10.1149/06403.1039ecst
Page Range:pp. 1039-1048
Publisher:Electrochemical Society, Inc.
ISSN:1938-5862
Status:Published
Keywords:Low Cost Bipolar Plates Large Scale PEM Electrolyzers Coatings Corrosion
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Fuel Cells (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Gago, Aldo
Deposited On:02 Dec 2014 15:49
Last Modified:06 Sep 2019 15:24

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