DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ju, Myung Jong | ko |
dc.contributor.author | Jeon, In-Yup | ko |
dc.contributor.author | Kim, Hong Mo | ko |
dc.contributor.author | Choi, Ji Il | ko |
dc.contributor.author | Jung, Sun-Min | ko |
dc.contributor.author | Seo, Jeong-Min | ko |
dc.contributor.author | Choi, In Taek | ko |
dc.contributor.author | Kang, Sung Ho | ko |
dc.contributor.author | Kim, Han Seul | ko |
dc.contributor.author | Noh, Min Jong | ko |
dc.contributor.author | Lee, Jae-Joon | ko |
dc.contributor.author | Jeong, Hu Young | ko |
dc.contributor.author | Kim, Hwan Kyu | ko |
dc.contributor.author | Kim, Yong-Hoon | ko |
dc.contributor.author | Baek, Jong-Beom | ko |
dc.date.accessioned | 2016-12-01T06:36:57Z | - |
dc.date.available | 2016-12-01T06:36:57Z | - |
dc.date.created | 2016-11-21 | - |
dc.date.created | 2016-11-21 | - |
dc.date.created | 2016-11-21 | - |
dc.date.created | 2016-11-21 | - |
dc.date.created | 2016-11-21 | - |
dc.date.created | 2016-11-21 | - |
dc.date.issued | 2016-06 | - |
dc.identifier.citation | SCIENCE ADVANCES, v.2, no.6, pp.e1501459 | - |
dc.identifier.issn | 2375-2548 | - |
dc.identifier.uri | http://hdl.handle.net/10203/214508 | - |
dc.description.abstract | Metal-free carbon-based electrocatalysts for dye-sensitized solar cells (DSSCs) are sufficiently active in Co(II)/Co(III) electrolytes but are not satisfactory in the most commonly used iodide/triiodide (I(-)/I3 (-)) electrolytes. Thus, developing active and stable metal-free electrocatalysts in both electrolytes is one of the most important issues in DSSC research. We report the synthesis of edge-selenated graphene nanoplatelets (SeGnPs) prepared by a simple mechanochemical reaction between graphite and selenium (Se) powders, and their application to the counter electrode (CE) for DSSCs in both I(-)/I3 (-) and Co(II)/Co(III) electrolytes. The edge-selective doping and the preservation of the pristine graphene basal plane in the SeGnPs were confirmed by various analytical techniques, including atomic-resolution transmission electron microscopy. Tested as the DSSC CE in both Co(bpy)3 (2+/3+) (bpy = 2,2'-bipyridine) and I(-)/I3 (-) electrolytes, the SeGnP-CEs exhibited outstanding electrocatalytic performance with ultimately high stability. The SeGnP-CE-based DSSCs displayed a higher photovoltaic performance than did the Pt-CE-based DSSCs in both SM315 sensitizer with Co(bpy)3 (2+/3+) and N719 sensitizer with I(-)/I3 (-) electrolytes. Furthermore, the I3 (-) reduction mechanism, which has not been fully understood in carbon-based CE materials to date, was clarified by an electrochemical kinetics study combined with density functional theory and nonequilibrium Green's function calculations. | - |
dc.language | English | - |
dc.publisher | AMER ASSOC ADVANCEMENT SCIENCE | - |
dc.title | Edge-selenated graphene nanoplatelets as durable metal-free catalysts for iodine reduction reaction in dye-sensitized solar cells | - |
dc.type | Article | - |
dc.identifier.wosid | 000380073800003 | - |
dc.identifier.scopusid | 2-s2.0-85003336281 | - |
dc.type.rims | ART | - |
dc.citation.volume | 2 | - |
dc.citation.issue | 6 | - |
dc.citation.beginningpage | e1501459 | - |
dc.citation.publicationname | SCIENCE ADVANCES | - |
dc.identifier.doi | 10.1126/sciadv.1501459 | - |
dc.contributor.localauthor | Kim, Yong-Hoon | - |
dc.contributor.nonIdAuthor | Ju, Myung Jong | - |
dc.contributor.nonIdAuthor | Jeon, In-Yup | - |
dc.contributor.nonIdAuthor | Kim, Hong Mo | - |
dc.contributor.nonIdAuthor | Jung, Sun-Min | - |
dc.contributor.nonIdAuthor | Seo, Jeong-Min | - |
dc.contributor.nonIdAuthor | Choi, In Taek | - |
dc.contributor.nonIdAuthor | Kang, Sung Ho | - |
dc.contributor.nonIdAuthor | Noh, Min Jong | - |
dc.contributor.nonIdAuthor | Lee, Jae-Joon | - |
dc.contributor.nonIdAuthor | Jeong, Hu Young | - |
dc.contributor.nonIdAuthor | Kim, Hwan Kyu | - |
dc.contributor.nonIdAuthor | Baek, Jong-Beom | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | FREE COUNTER ELECTRODES | - |
dc.subject.keywordPlus | LOW-COST | - |
dc.subject.keywordPlus | FUNCTIONALIZED GRAPHENE | - |
dc.subject.keywordPlus | POROUS CARBON | - |
dc.subject.keywordPlus | FREE CATHODES | - |
dc.subject.keywordPlus | REDOX COUPLE | - |
dc.subject.keywordPlus | EFFICIENCY | - |
dc.subject.keywordPlus | GRAPHITE | - |
dc.subject.keywordPlus | PLATINUM | - |
dc.subject.keywordPlus | SELENIUM | - |
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