Abstract
Owing to its remarkable electrical and mechanical properties, graphene has been attracting tremendous interest in materials science. In particular, its chemical stability and impermeability make it a promising protective membrane. However, recent investigations reveal that single layer graphene cannot be used as a barrier in the long run, due to galvanic corrosion phenomena arising when oxygen or water penetrate through graphene cracks or domain boundaries. Here, we overcome this issue by using a multilayered (ML) graphene coating. Our lab- as well as industrial-scale tests demonstrate that ML graphene can effectively protect Ni in harsh environments, even after long term exposure. This is made possible by the presence of a high number of graphene layers, which can efficiently mask the cracks and domain boundaries defects found in individual layers of graphene. Our findings thus show that graphene can still be a relevant candidate for thin coatings.
Original language | English |
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Title of host publication | Proceedings of Carbonhagen 2014 |
Number of pages | 2 |
Publication date | 2014 |
Publication status | Published - 2014 |
Event | 5th Symposium on Carbon Nanomaterials - Copenhagen, Denmark Duration: 21 Aug 2014 → 22 Aug 2014 Conference number: 5 http://www.carbonhagen.com/ |
Conference
Conference | 5th Symposium on Carbon Nanomaterials |
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Number | 5 |
Country/Territory | Denmark |
City | Copenhagen |
Period | 21/08/2014 → 22/08/2014 |
Internet address |