DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kang, Gil-Seong | ko |
dc.contributor.author | Jang, Jue-Hyuk | ko |
dc.contributor.author | Son, Su-Young | ko |
dc.contributor.author | Lee, Cheol-Ho | ko |
dc.contributor.author | Lee, Youn-Ki | ko |
dc.contributor.author | Lee, Doh C. | ko |
dc.contributor.author | Yoo, Sung Jong | ko |
dc.contributor.author | Lee, Sungho | ko |
dc.contributor.author | Joh, Han-Ik | ko |
dc.date.accessioned | 2020-12-23T08:30:06Z | - |
dc.date.available | 2020-12-23T08:30:06Z | - |
dc.date.created | 2020-11-30 | - |
dc.date.created | 2020-11-30 | - |
dc.date.created | 2020-11-30 | - |
dc.date.created | 2020-11-30 | - |
dc.date.issued | 2020-11 | - |
dc.identifier.citation | JOURNAL OF MATERIALS CHEMISTRY A, v.8, no.42, pp.22379 - 22388 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | http://hdl.handle.net/10203/278989 | - |
dc.description.abstract | Single-atom catalysts have been considered as representative non-noble metal catalysts for replacing the platinum catalyst. Fundamentally, the dispersion of metal atoms on a carbon support with limited surface area results in extremely low loading of the active metal, leading to a thick electrode and low volumetric energy density. In this study, we present a facile strategy for increasing the active metal densities on the M-N-C catalyst through the use of dual active sites such as Fe-N-x and nanosized Fe3C that have different reaction pathways involving 4 and 2 + 2 (or 2 x 2) electrons, respectively. The dual active sites were realized by the addition of Zn that affects the physical shielding of Fe and energy bypass, leading to the formation of single-atomic Fe-N-x species and nanosized Fe3C with similar to 2 nm. Our catalyst exhibits superior oxygen reduction reaction activity to that of the commercial 20 wt% Pt/C catalysts both in half cell (onset potential, 0.95 V; half-wave potential, 0.9 V) and single cell (maximum power density, 367 mW cm(-2)). Therefore, we expect that our facile strategy would open an avenue for the rational design and synthesis of highly loaded active Fe-based catalysts. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Fe-based non-noble metal catalysts with dual active sites of nanosized metal carbide and single-atomic species for oxygen reduction reaction | - |
dc.type | Article | - |
dc.identifier.wosid | 000585127100042 | - |
dc.identifier.scopusid | 2-s2.0-85095685721 | - |
dc.type.rims | ART | - |
dc.citation.volume | 8 | - |
dc.citation.issue | 42 | - |
dc.citation.beginningpage | 22379 | - |
dc.citation.endingpage | 22388 | - |
dc.citation.publicationname | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.identifier.doi | 10.1039/d0ta07748h | - |
dc.contributor.localauthor | Lee, Doh C. | - |
dc.contributor.nonIdAuthor | Jang, Jue-Hyuk | - |
dc.contributor.nonIdAuthor | Son, Su-Young | - |
dc.contributor.nonIdAuthor | Lee, Cheol-Ho | - |
dc.contributor.nonIdAuthor | Lee, Youn-Ki | - |
dc.contributor.nonIdAuthor | Yoo, Sung Jong | - |
dc.contributor.nonIdAuthor | Lee, Sungho | - |
dc.contributor.nonIdAuthor | Joh, Han-Ik | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | N-C CATALYST | - |
dc.subject.keywordPlus | DOPED GRAPHENE | - |
dc.subject.keywordPlus | NONPRECIOUS ELECTROCATALYSTS | - |
dc.subject.keywordPlus | N/C ELECTROCATALYSTS | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | IRON | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordPlus | DENSITY | - |
dc.subject.keywordPlus | PHOSPHORUS | - |
dc.subject.keywordPlus | MECHANISM | - |
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