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Cho, Jaephil
Nano Energy Storage Materials Lab (NESM)
Research Interests
  • Li-ion battery, metal-air battery, redox-flow battery, flexible battery .

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Exploration of the Effective Location of Surface Oxygen Defects in Graphene-Based Electrocatalysts for All-Vanadium Redox-Flow Batteries

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dc.contributor.author Park, Minjoon ko
dc.contributor.author Jeon, In-Yup ko
dc.contributor.author Ryu, Jaechan ko
dc.contributor.author Baek, Jong-Beom ko
dc.contributor.author Cho, Jaephil ko
dc.date.available 2015-04-17T01:32:59Z -
dc.date.created 2015-04-13 ko
dc.date.issued 2015-03 ko
dc.identifier.citation ADVANCED ENERGY MATERIALS, v.5, no.5, pp.1401550 ko
dc.identifier.issn 1614-6832 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/11282 -
dc.description.abstract Oxygen functional groups play a key role in vanadium redox reactions. To identify the effective location of oxygen functionalities in graphene-based nanomaterials, a selectively edge-functionalized graphene nanoplatelet (E-GnP) with a crystalline basal plane is produced by a ball-milling process in the presence of dry ice. For comparison, the reduced graphene oxide (rGO) that contains defects at both edges and in the basal plane is produced by a modified Hummers' method. The location of defects in the graphene-based nanomaterials significantly affects the electrocatalytic activity towards vanadium redox couples (V2+/V3+ and VO2+/VO2 (+)). The improved activity of these nanoplatelets lies in the presence of oxygen defects at the edge sites and higher crystallinity of basal planes than in rGO. This effective location of oxygen defects facilitates fast electron-transfer and mass-transport processes ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher WILEY-V C H VERLAG GMBH ko
dc.title Exploration of the Effective Location of Surface Oxygen Defects in Graphene-Based Electrocatalysts for All-Vanadium Redox-Flow Batteries ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84924552768 ko
dc.identifier.wosid 000350754800012 ko
dc.type.rims ART ko
dc.description.wostc 2 *
dc.date.tcdate 2015-12-28 *
dc.identifier.doi 10.1002/aenm.201401550 ko
dc.identifier.url http://onlinelibrary.wiley.com/doi/10.1002/aenm.201401550/abstract;jsessionid=5A085C2405012122676D167C0095128E.f01t02 ko
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