Corrosion behavior of pre-oxidized and thermally nitrided stainless steel for polymer electrolyte membrane fuel cell bipolar plates

In the present study, we try to prepare hydrophobic film coated on stainless steel as the bipolar plate for polymer electrolyte membrane fuel cell (PEMFC). Magnetron sputtering (MS) was adoped to prepare the Cr3Ni2/Cr2N multi-layer coated on stainless steel. The corrosion resistance and electrical conductance of the coated substrate were tested. The water contact angles were measured. The film exhibits improved corrosion resistance and electrical conductance. The corrosion current is 0.58µA.cm-2 and the contact resistance at 240N.cm-2 is 8.5mΩ.cm2. Meanwhile, it is a kind of hydrophobic film with water contact angle of 107o. The performance shows strong dependance on microstructural characteristics. The nano-protrudes on the SS304/Cr3Ni2/Cr2N surface result in the film with hydrophobic property, just like the effect of lotus surface.

Download Full-text

Polyethylene-carbon material for polymer electrolyte membrane fuel cell bipolar plates

Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications ◽

10.1243/14644207jmda172 ◽

2008 ◽

Vol 222 (3) ◽

pp. 197-208 ◽

Cited By ~ 2

Author(s):

P. Greenwood ◽

R. Chen ◽

R. H. Thring

Keyword(s):

Fuel Cell ◽

Polymer Electrolyte ◽

Carbon Material ◽

Polymer Electrolyte Membrane ◽

Bipolar Plates ◽

Electrolyte Membrane

Download Full-text

Investigation of Different Electrochemical Corrosion Treatments on Bipolar Plates for High and Low Temperature Polymer Electrolyte Membrane Fuel Cell Application

ECS Meeting Abstracts ◽

10.1149/ma2021-02371110mtgabs ◽

2021 ◽

Vol MA2021-02 (37) ◽

pp. 1110-1110

Author(s):

Lisa Maria Uhlig ◽

Nadine Pilinski ◽

Henrike Schmies ◽

Thorsten Hickmann ◽

Peter Wagner

Keyword(s):

Fuel Cell ◽

Low Temperature ◽

Polymer Electrolyte ◽

Polymer Electrolyte Membrane ◽

Electrochemical Corrosion ◽

Bipolar Plates ◽

Electrolyte Membrane ◽

Fuel Cell Application

Download Full-text

Investigation of Corrosion Methods for Bipolar Plates for High Temperature Polymer Electrolyte Membrane Fuel Cell Application

Energies ◽

10.3390/en13010235 ◽

2020 ◽

Vol 13 (1) ◽

pp. 235

Author(s):

Nadine Pilinski ◽

Claudia Käding ◽

Anastasia Dushina ◽

Thorsten Hickmann ◽

Alexander Dyck ◽

...

Keyword(s):

High Temperature ◽

Fuel Cell ◽

Polymer Electrolyte ◽

Corrosion Behaviour ◽

Polymer Electrolyte Membrane ◽

Carbon Surface ◽

Potential Range ◽

Bipolar Plates ◽

Electrolyte Membrane ◽

Fuel Cell Application

In this work, different methods and electrochemical set-ups were investigated in order to study the corrosion behaviour of bipolar plates (BPP) for high temperature (HT) polymer electrolyte membrane fuel cell application. Using confocal and scanning electron microscopy, it was shown that chemical and electrochemical aging significantly increases surface roughness as well as morphology changes, confirming material degradation. Identical electrochemical corrosion behaviour was observed for both set-ups with typical quinone/hydroquinone peaks in the potential range ~0.6–0.7 V versus reversible hydrogen electrode (RHE). The appearance of the peaks and an increase of double layer capacitance can be related to the oxidation of carbon surface and, consequently, material corrosion. Simultaneously, an optimised corrosion set-up was introduced and verified regarding suitability. Both investigated set-ups and methods are useful to analyse the oxidation behaviour and corrosion resistance.

Download Full-text