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DC Field | Value | Language |
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dc.citation.endPage | 2269 | - |
dc.citation.number | 8 | - |
dc.citation.startPage | 2263 | - |
dc.citation.title | ENERGY & ENVIRONMENTAL SCIENCE | - |
dc.citation.volume | 11 | - |
dc.contributor.author | Li, Feng | - |
dc.contributor.author | Han, Gao-Feng | - |
dc.contributor.author | Noh, Hyuk-Jun | - |
dc.contributor.author | Kim, Seok-Jin | - |
dc.contributor.author | Lu, Yalin | - |
dc.contributor.author | Jeong, Hu Young | - |
dc.contributor.author | Fu, Zhengping | - |
dc.contributor.author | Baek, Jong-Beom | - |
dc.date.accessioned | 2023-12-21T20:18:04Z | - |
dc.date.available | 2023-12-21T20:18:04Z | - |
dc.date.created | 2018-10-05 | - |
dc.date.issued | 2018-08 | - |
dc.description.abstract | With their high catalytic activity, stability, selectivity, and 100% atom utilization, single atomic non-noble metal based materials are valuable alternatives to efficient but expensive Pt based catalysts. For efficient catalysis, single-atom catalysts must expose abundant single atomic metal active centers. Here, we report the rational design and synthesis of a Cu single-atom catalyst with high Cu content of over 20.9 wt%, made of single atomic Cu anchored into an ultrathin nitrogenated two-dimensional carbon matrix (Cu-N-C). The high Cu content was achieved by the introduction of additional N species, which can securely trap and protect the Cu atoms. During oxygen reduction, the single atomic Cu exhibited over 54 times higher mass activity than metallic Cu nanoparticles at a potential of 0.85 V versus a reversible hydrogen electrode (RHE). Furthermore, the Cu-N-C exhibited 3.2 times higher kinetic current at 0.85 V (vs. RHE), and a much lower Tafel slope (37 mV dec(-1)), as well as better methanol/carbon monoxide tolerance and long-term stability than commercial Pt/C. Density functional theory (DFT) calculations reveal that the Cu active sites exhibit improved O-O bond stretching and favorable adsorption energies of O-2 and OOH for four-electron oxygen reduction. | - |
dc.identifier.bibliographicCitation | ENERGY & ENVIRONMENTAL SCIENCE, v.11, no.8, pp.2263 - 2269 | - |
dc.identifier.doi | 10.1039/c8ee01169a | - |
dc.identifier.issn | 1754-5692 | - |
dc.identifier.scopusid | 2-s2.0-85052151828 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/24950 | - |
dc.identifier.url | https://pubs.rsc.org/en/Content/ArticleLanding/2018/EE/C8EE01169A#!divAbstract | - |
dc.identifier.wosid | 000442262900034 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Boosting oxygen reduction catalysis with abundant copper single atom active sites | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Energy & Fuels; Engineering, Chemical; Environmental Sciences | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Engineering; Environmental Sciences & Ecology | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | NONPRECIOUS METAL-CATALYSTS | - |
dc.subject.keywordPlus | POROUS CARBON | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordPlus | IRON | - |
dc.subject.keywordPlus | ELECTROCATALYSTS | - |
dc.subject.keywordPlus | EVOLUTION | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | CATHODE | - |
dc.subject.keywordPlus | COBALT | - |
dc.subject.keywordPlus | WATER | - |
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