Full metadata record
DC Field | Value | Language |
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dc.citation.number | 6 | - |
dc.citation.startPage | e1501459 | - |
dc.citation.title | SCIENCE ADVANCES | - |
dc.citation.volume | 2 | - |
dc.contributor.author | Ju, Myung Jong | - |
dc.contributor.author | Jeon, In-Yup | - |
dc.contributor.author | Kim, Hong Mo | - |
dc.contributor.author | Choi, Ji Il | - |
dc.contributor.author | Jung, Sun-Min | - |
dc.contributor.author | Seo, Jeong-Min | - |
dc.contributor.author | Choi, In Taek | - |
dc.contributor.author | Kang, Sung Ho | - |
dc.contributor.author | Kim, Han Seul | - |
dc.contributor.author | Noh, Min Jong | - |
dc.contributor.author | Lee, Jae-Joon | - |
dc.contributor.author | Jeong, Hu Young | - |
dc.contributor.author | Kim, Hwan Kyu | - |
dc.contributor.author | Kim, Yong-Hoon | - |
dc.contributor.author | Baek, Jong-Beom | - |
dc.date.accessioned | 2023-12-21T23:39:18Z | - |
dc.date.available | 2023-12-21T23:39:18Z | - |
dc.date.created | 2016-08-12 | - |
dc.date.issued | 2016-06 | - |
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-/I-3(-)) 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-/I-3(-) 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-/I-3(-) 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-/I-3(-) electrolytes. Furthermore, the I-3(-) 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.identifier.bibliographicCitation | SCIENCE ADVANCES, v.2, no.6, pp.e1501459 | - |
dc.identifier.doi | 10.1126/sciadv.1501459 | - |
dc.identifier.issn | 2375-2548 | - |
dc.identifier.scopusid | 2-s2.0-85003336281 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/20242 | - |
dc.identifier.url | http://advances.sciencemag.org/content/2/6/e1501459 | - |
dc.identifier.wosid | 000380073800003 | - |
dc.language | 영어 | - |
dc.publisher | American Association for the Advancement of 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.description.isOpenAccess | TRUE | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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 | GRAPHITE | - |
dc.subject.keywordPlus | PLATINUM | - |
dc.subject.keywordPlus | TRANSPARENT | - |
dc.subject.keywordPlus | POLYANILINE | - |
dc.subject.keywordPlus | DIFFUSION | - |
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