Effect of substrate material on the corrosion of TiN-coated stainless steels in simulated anode and cathode environments of proton exchange membrane fuel cells

Wang, Yan; Northwood, Derek O.

doi:10.1016/j.jpowsour.2009.02.029

Cited by 45 publications

(17 citation statements)

References 31 publications

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“…This was verified by Wang et al [52] who studied the corrosion of SS316L and SS410 after their coating with TiN. They found that the corrosion current density of both coated substrates is quite different.…”

Section: Potentiostatic Polarization Tests Of Niecoep Coated Aluminummentioning

confidence: 61%

Study of different aluminum alloy substrates coated with Ni–Co–P as metallic bipolar plates for PEM fuel cell applications

Fetohi

Hameed

El–Khatib

et al. 2012

International Journal of Hydrogen Energy

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Section: Potentiostatic Polarization Tests Of Niecoep Coated Aluminummentioning

confidence: 61%

Study of different aluminum alloy substrates coated with Ni–Co–P as metallic bipolar plates for PEM fuel cell applications

Fetohi

Hameed

El–Khatib

et al. 2012

International Journal of Hydrogen Energy

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“…The ICR measurement method used in this study is similar to that reported by Wang et al 9,10) , except a decrease in the number of interfaces in order to carry out more accurate and simpler measurements, as shown in Fig.1. According to the present method, the measured resistance (R total ) is twice the resistance between the GDL and the coating (R GDL/coating ), and can be expressed as R total = 2 R GDL/coating .…”

Section: Icr Measurementsmentioning

confidence: 82%

Corrosion characteristics and interfacial contact resistances of TiN and CrN coatings deposited by PVD on 316L stainless steel for polymer electrolyte membrane fuel cell bipolar plates

Lee¹,

Oh²

2013

Corrosion Science and Technology

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In a polymer membrane fuel cell stack, the bipolar plate is a key element because it accounts for over 50% of total costs of the stack. In order to lower the cost of bipolar plates, 316L stainless steels coated with nitrides such as TiN and CrN by physical vapor deposition were investigated as alternative materials for the replacement of traditional brittle graphite bipolar-plates. For this purpose, interfacial contact resistances were measured and electrochemical corrosion tests were conducted. The results showed that although both TiN and CrN coatings decreased the interfacial contact resistances to less than 10 mΩ·cm 2 , they did not significantly improve the corrosion resistance in simulated polymer electrolyte membrane fuel cell environments. A CrN coating on 316L stainless steel showed better corrosion resistance than a TiN coating did, indicating the possibility of using modified CrN coated metallic bipolar plates to replace graphite bipolar plates.

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“…In order to evaluate the corrosion resistance, a potential of 2 V vs. RHE was applied to the coated stainless steel samples, as this is a normal operating condition of a PEMWE. In contrast coated BPP materials of PEMFC are usually evaluated only up to 0.82 V vs. RHE (19,20). Table I groups some electrochemical parameters extracted from Figure 5.…”

Section: Corrosion Testsmentioning

confidence: 99%

Low Cost Bipolar Plates for Large Scale PEM Electrolyzers

et al. 2014

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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 electrochemically 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 electroceramic. The coating reported herein could have a large impact on the cost of PEM electrolyzers for large scale electricity storage from renewables.

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Effect of substrate material on the corrosion of TiN-coated stainless steels in simulated anode and cathode environments of proton exchange membrane fuel cells

Cited by 45 publications

References 31 publications

Study of different aluminum alloy substrates coated with Ni–Co–P as metallic bipolar plates for PEM fuel cell applications

Study of different aluminum alloy substrates coated with Ni–Co–P as metallic bipolar plates for PEM fuel cell applications

Corrosion characteristics and interfacial contact resistances of TiN and CrN coatings deposited by PVD on 316L stainless steel for polymer electrolyte membrane fuel cell bipolar plates

Low Cost Bipolar Plates for Large Scale PEM Electrolyzers

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