TANTALUM-BASED COATINGS ON STAINLESS STEEL FOR FUEL-CELL BIPOLAR PLATES

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43921696" target="_blank" >RIV/60461373:22310/20:43921696 - isvavai.cz</a>
Result on the web
<a href="https://www.confer.cz/metal/2020/3536-metallic-materials-for-fuel-cell-bipolar-plates" target="_blank" >https://www.confer.cz/metal/2020/3536-metallic-materials-for-fuel-cell-bipolar-plates</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.37904/metal.2020.3536" target="_blank" >10.37904/metal.2020.3536</a>

Result language
angličtina
Original language name
TANTALUM-BASED COATINGS ON STAINLESS STEEL FOR FUEL-CELL BIPOLAR PLATES
Original language description
Stainless steels are promising materials for fuel cell bipolar plates. It meets high demands for bipolar plates, good thermal and electrical conductivity, low cost, good mechanical properties. However, corrosion stability in fuel cell environment is either poor or achieved by passive layer. Passive layer improves corrosion resistance, but decrease electrical conductivity, respectively increase contact resistance. Coating stainless steel is one approach, how to obtain suitable material. This study focused on commonly used stainless steel AISI 316L as reference and two Ta-based coatings, tantalum coating and tantalum coating with upper layer of Ta2O5 and RuO2. All materials were tested in simulated PEMFC environment, diluted sulfuric acid of pH 3 with 1 ppm fluoride ions at 80 °C. Open circuit potential, linear sweep voltammetry anodic and cathodic dynamic scans were carried out. Materials were compared only based on short-term electrochemical measurements. Despite that, tantalum coating perform better corrosion resistance than bare steel, passive layer of tantalum is non-conductive, thus inappropriate for fuel cells.
Czech name
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Czech description
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Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
METAL 2020 - 29th International Conference on Metallurgy and Materials
ISBN
978-80-87294-97-0
ISSN
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e-ISSN
—
Number of pages
4
Pages from-to
627-631
Publisher name
Tanger s.r.o.
Place of publication
Ostrava
Event location
Brno
Event date
May 20, 2020
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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