DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, Chang-Hyuck | ko |
dc.contributor.author | Chung, Min-Wook | ko |
dc.contributor.author | Park, Sung-Hyeon | ko |
dc.contributor.author | Woo, Seong-Ihl | ko |
dc.date.accessioned | 2013-04-11T07:50:36Z | - |
dc.date.available | 2013-04-11T07:50:36Z | - |
dc.date.created | 2013-04-09 | - |
dc.date.created | 2013-04-09 | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | RSC ADVANCES, v.3, no.13, pp.4246 - 4253 | - |
dc.identifier.issn | 2046-2069 | - |
dc.identifier.uri | http://hdl.handle.net/10203/173470 | - |
dc.description.abstract | Graphene, which is a two-dimensional layer structure of sp(2)-hybridized carbon, has been highlighted recently as a promising material for energy conversion. Herein, graphene-derived catalysts are developed for application in oxygen reduction reactions (ORRs) in acidic media via heat-treatment with dicyandiamide and a small amount (<1 wt.%) of transition metal. In ORRs, bare graphene exhibits 0.58 V (vs. RHE) of the onset potential; however, it increases to similar to 0.9 V through modification steps and records a mass activity of 1.28 mA mg(-1) at 0.75 V. Through the correlation curve between the ORR activities and the number of restacked graphene layers, it is proposed that the stacking of a few layers is desirable in the ORRs rather than a single layer catalyst. The graphene-derived catalysts exhibit graphite properties of facile electron transfer as the restacking of graphene layers increases, without degradation of the pyridinic-N on the graphene edge. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | PEM FUEL-CELLS | - |
dc.subject | METAL-FREE ELECTROCATALYSTS | - |
dc.subject | CATALYST-FREE SYNTHESIS | - |
dc.subject | ACID-MEDIA | - |
dc.subject | NITROGEN | - |
dc.subject | CARBON | - |
dc.subject | IRON | - |
dc.subject | GRAPHITE | - |
dc.subject | BORON | - |
dc.subject | OXIDE | - |
dc.title | Enhanced electrochemical oxygen reduction reaction by restacking of N-doped single graphene layers | - |
dc.type | Article | - |
dc.identifier.wosid | 000315818200022 | - |
dc.identifier.scopusid | 2-s2.0-84874917455 | - |
dc.type.rims | ART | - |
dc.citation.volume | 3 | - |
dc.citation.issue | 13 | - |
dc.citation.beginningpage | 4246 | - |
dc.citation.endingpage | 4253 | - |
dc.citation.publicationname | RSC ADVANCES | - |
dc.identifier.doi | 10.1039/c3ra23180a | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Woo, Seong-Ihl | - |
dc.contributor.nonIdAuthor | Chung, Min-Wook | - |
dc.contributor.nonIdAuthor | Park, Sung-Hyeon | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | PEM FUEL-CELLS | - |
dc.subject.keywordPlus | METAL-FREE ELECTROCATALYSTS | - |
dc.subject.keywordPlus | CATALYST-FREE SYNTHESIS | - |
dc.subject.keywordPlus | ACID-MEDIA | - |
dc.subject.keywordPlus | NITROGEN | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | IRON | - |
dc.subject.keywordPlus | GRAPHITE | - |
dc.subject.keywordPlus | BORON | - |
dc.subject.keywordPlus | OXIDE | - |
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