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Lee, Zonghoon
Atomic-Scale Electron Microscopy (ASEM) Lab
Research Interests
  • Advanced Transmission Electron Microscopy (TEM/STEM), in Situ TEM, graphene, 2D materials, low-dimensional crystals, nanostructured materials

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Superaerophobic graphene nano-hills for direct hydrazine fuel cells

DC FieldValueLanguage
dc.contributor.authorAkbar, Kamranko
dc.contributor.authorKim, Jung Hwako
dc.contributor.authorLee, Zonghoonko
dc.contributor.authorKim, Minsooko
dc.contributor.authorYi, Yeonjinko
dc.contributor.authorChun, Seung-Hyunko
dc.date.available2017-06-16T04:21:00Z-
dc.date.created2017-06-09ko
dc.date.issued201705ko
dc.identifier.citationNPG ASIA MATERIALS, v.9, no., pp.e378 -ko
dc.identifier.issn1884-4049ko
dc.identifier.urihttp://scholarworks.unist.ac.kr/handle/201301/22213-
dc.identifier.urihttps://www.nature.com/am/journal/v9/n5/full/am201755a.htmlko
dc.description.abstractHydrazine fuel-cell technology holds great promise for clean energy, not only because of the greater energy density of hydrazine compared to hydrogen but also due to its safer handling owing to its liquid state. However, current technologies involve the use of precious metals (such as platinum) for hydrazine oxidation, which hinders the further application of hydrazine fuel-cell technologies. In addition, little attention has been devoted to the management of gas, which tends to become stuck on the surface of the electrode, producing overall poor electrode efficiencies. In this study, we utilized a nano-hill morphology of vertical graphene, which efficiently resolves the issue of the accumulation of gas bubbles on the electrode surface by providing a nano-rough-edged surface that acts as a superaerophobic electrode. The growth of the vertical graphene nano-hills was achieved and optimized by a scalable plasma-enhanced chemical vapor deposition method. The resulting metal-free graphene-based electrode showed the lowest onset potential (-0.42 V vs saturated calomel electrode) and the highest current density of all the carbon-based materials reported previously for hydrazine oxidation.ko
dc.languageENGko
dc.publisherNATURE PUBLISHING GROUPko
dc.titleSuperaerophobic graphene nano-hills for direct hydrazine fuel cellsko
dc.typeARTICLEko
dc.identifier.pid1059null
dc.identifier.rimsid28582ko
dc.identifier.wosid000401611600001ko
dc.type.rimsAko
dc.identifier.doihttp://dx.doi.org/10.1038/am.2017.55ko
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