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Low-Cost and Durable Bipolar Plates for Proton Exchange Membrane Electrolyzers

Lettenmeier, Philipp and Wang, rainey and Abouatallah, Rami and Saruhan-Brings, Bilge and Freitag, Thomas Oliver and Gazdzicki, Pawel and Morawietz, Tobias and Hiesgen, Renate and Gago, Aldo and Friedrich, K. Andreas (2017) Low-Cost and Durable Bipolar Plates for Proton Exchange Membrane Electrolyzers. Scientific Reports, 7 (44035). Nature Publishing Group. DOI: 10.1038/srep44035 ISSN 2045-2322

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Official URL: http://www.nature.com/articles/srep44035


Cost reduction and high efficiency are the mayor challenges for sustainable H2 production via proton exchange membrane (PEM) electrolysis. Titanium-based components such as bipolar plates (BPP) have the largest contribution to the capital cost. This work proposes the use of stainless steel BPPs coated with Nb and Ti by magnetron sputtering physical vapor deposition (PVD) and vacuum plasma spraying (VPS), respectively. The physical properties of the coatings are thoroughly characterized by scanning electron, atomic force microscopies (SEM, AFM); and X-ray diffraction, photoelectron spectroscopies (XRD, XPS). The Ti coating (50 μm) protects the stainless steel substrate against corrosion, while a 50-fold thinner layer of Nb decreases the contact resistance by almost one order of magnitude. The Nb/Ti-coated stainless steel bipolar BPPs endure the harsh environment of the anode for more than 1000 h of operation under nominal conditions, showing a potential use in PEM electrolyzers for large-scale H2 production from renewables.

Item URL in elib:https://elib.dlr.de/111675/
Document Type:Article
Title:Low-Cost and Durable Bipolar Plates for Proton Exchange Membrane Electrolyzers
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lettenmeier, PhilippDLRUNSPECIFIED
Wang, raineyhydrogenicsUNSPECIFIED
Abouatallah, RamihydrogenicsUNSPECIFIED
Saruhan-Brings, BilgeBilge.Saruhan (at) dlr.deUNSPECIFIED
Freitag, Thomas Oliverthomas.freitag (at) dlr.deUNSPECIFIED
Gazdzicki, Pawelpawel.gazdzicki (at) dlr.deUNSPECIFIED
Morawietz, Tobiashochschule esslingenUNSPECIFIED
Hiesgen, Renaterenate.hiesgen (at) hs-esslingen.deUNSPECIFIED
Gago, Aldoaldo.gago (at) dlr.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Date:March 2017
Journal or Publication Title:Scientific Reports
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.1038/srep44035
Publisher:Nature Publishing Group
Keywords:corrosion, PEM electrolysis, bipolar plate
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:29 Mar 2017 10:16
Last Modified:08 Mar 2018 18:36

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