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Baek, Jong-Beom
Center for Dimension-Controllable Organic Frameworks
Research Interests
  • Covalent Organic Frameworks (COFs), Carbon Nanotubes(CNTs), graphene, Energy Conversion and Storage

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Tuning edge-oxygenated groups on graphitic carbon materials against corrosion

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Title
Tuning edge-oxygenated groups on graphitic carbon materials against corrosion
Author
Han, Gao-FengXiao, Bei-BeiKim, Seok-JinLi, FengAhmad, IshfaqJeon, In-YupBaek, Jong-Beom
Issue Date
2019-12
Publisher
Elsevier Ltd
Citation
NANO ENERGY, v.66, pp.104112
Abstract
The carbon materials receive considerable attention, due to their wide application potentials in energy conversion and storage. Stemming from their low standard oxidation potential (0.207 V versus SHE), the carbon corrosion is thermodynamically favored. Hence, mitigating this unwelcomed phenomenon is of paramount importance, due to the subsequent deactivation or peeling off caused by carbon corrosion. However, to the best of our knowledge, there are no systematically studied experiments on the stability of edge-oxygenated groups on graphitic carbon frameworks, since it is difficult to control the edges with unitary group by traditional strong oxidation method. Here, we adopt a pre-activated method to decorate the edges with targeted functional groups, such as (G)C–H, (G)C–OH, (G)C–O–C(G), (G)C–COO–C(G), (G)C–COOH. Our experiments and DFT calculations demonstrate that the in-plane etheric rings exhibit the highest stability against both electrochemical and chemical corrosions. The findings will be a guide to design carbon-based catalysts with high stability.
URI
https://scholarworks.unist.ac.kr/handle/201301/30333
URL
https://www.sciencedirect.com/science/article/pii/S2211285519308195?via%3Dihub
DOI
10.1016/j.nanoen.2019.104112
ISSN
2211-2855
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