Multilayer graphene for long-term corrosion protection of stainless steel bipolar plates for polymer electrolyte membrane fuel cell
| Autor: | Susie Ann Spiegelhauer, Feng Yu, Peter Bøggild, Adam Carsten Stoot, Luca Camilli |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Energy Engineering and Power Technology chemistry.chemical_element Chemical vapor deposition Electrolyte Corrosion law.invention symbols.namesake wet corrosion law metal bipolar plate Electrical and Electronic Engineering Physical and Theoretical Chemistry Composite material Thin film stainless steel chemistry.chemical_classification Settore FIS/03 Renewable Energy Sustainability and the Environment Graphene fungi Metallurgy technology industry and agriculture Polymer graphene coating Nickel chemical vapour deposition Raman spectroscopy chemistry symbols |
| Zdroj: | Journal of Power Sources. 293:846-851 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2015.06.009 |
| Popis: | Motivated by similar investigations recently published (Pu et al., 2015), we report a comparative corrosion study of three sets of samples relevant as bipolar plates for polymer electrolyte fuel cells: stainless steel, stainless steel with a nickel seed layer (Ni/SS) and stainless steel with Ni seed layer coated by a multi-layered graphene thin film (G/Ni/SS). The graphene film, synthesized by chemical vapour deposition (CVD), has a moderate amount of defects according to Raman spectroscopy. Short/medium-term corrosion test shows no significant advantage of using G/Ni/SS rather than Ni/SS, both samples exhibiting a similar trend, thus questioning the short-term positive effect of graphene coatings. However, partial immersion in boiling seawater for three weeks reveals a clear superiority of the graphene coating with respect to steel just protected by Ni. After the test, the graphene film is still intact with unchanged defect density. Our results show that even non-perfect multilayer graphene films can considerably increase the lifetime of future-generation bipolar plates for fuel cells. |
| Databáze: | OpenAIRE |
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