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Coated Stainless Steel Bipolar Plates for Proton Exchange Membrane Electrolyzers

Lettenmeier, Philipp and Wang, rainey and Abouatallah, Rami and Burggraf, Fabian and Gago, Aldo and Friedrich, K. Andreas (2016) Coated Stainless Steel Bipolar Plates for Proton Exchange Membrane Electrolyzers. Journal of The Electrochemical Society, 163 (11). Electrochemical Society, Inc.. DOI: 10.1149/2.0141611jes ISBN 0013-4651 ISSN 0013-4651

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Official URL: http://jes.ecsdl.org/content/163/11/F3119/F6.expansion.html


Given its rapid response to fluctuating currents and wide operation range, proton exchange membrane (PEM) water electrolysis is utmost suitable for generation of hydrogen from renewable power. However, it is still hindered by the high cost of the stack components compared to those used in the alkaline technology. In particular, the titanium bipolar plates (BPP) are an issue and the replacement of this metal by stainless steel is a challenge, due to the highly corrosive environment inside PEM electrolyzer stack. Herein, we coat stainless steel BPPs with 50–60 μm Ti and 1.5 μm Pt coatings by vacuum plasma spraying (VPS) and magnetron sputtering physical vapor deposition (PVD), respectively. The BPPs are evaluated at constant 1 A cm−2 for more than 1000 h. The thermally sprayed Ti coatings fully protect the stainless steel substrate during this period of time, and the Pt surface modification allows achieving a cell performance comparable to the baseline.

Item URL in elib:https://elib.dlr.de/105640/
Document Type:Article
Title:Coated Stainless Steel Bipolar Plates for Proton Exchange Membrane Electrolyzers
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lettenmeier, PhilippDLRUNSPECIFIED
Wang, raineyHydrogenicsUNSPECIFIED
Abouatallah, RamiHydrogenicsUNSPECIFIED
Gago, Aldoaldo.gago (at) dlr.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Journal or Publication Title:Journal of The Electrochemical Society
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1149/2.0141611jes
Publisher:Electrochemical Society, Inc.
Series Name:The Electrochemical Society
Keywords:Bipolar plates; Coatings; Titanium; Stainless steel; PEM electrolysis; PEM electrolyzer
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Electrolysis and Hydrogen
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (Electrolysis) (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Lettenmeier, Philipp
Deposited On:11 Aug 2016 10:50
Last Modified:31 Jul 2019 20:02

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