dc.citation.conferencePlace |
KO |
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dc.citation.title |
2019 KIChE Spring Meeting |
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dc.contributor.author |
Kim, Ho Young |
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dc.contributor.author |
Kim, Jong Min |
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dc.contributor.author |
Ha, Yoonhoo |
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dc.contributor.author |
Woo, Jinwoo |
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dc.contributor.author |
Kim, Hyungjun |
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dc.contributor.author |
Kim, Jin Young |
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dc.contributor.author |
Joo, Sang Hoon |
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dc.date.accessioned |
2024-02-01T00:36:20Z |
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dc.date.available |
2024-02-01T00:36:20Z |
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dc.date.created |
2020-01-08 |
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dc.date.issued |
2019-04-25 |
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dc.description.abstract |
Pt-based intermetallic nanostructures have demonstrated superior electrocatalytic performances compared to random alloy structures. However, the origin of their enhanced catalytic properties remains elusive, and a robust synthetic strategy for intermetallic nanostructures represents a challenge. Here, we reveal by combining theoretical and experimental results that the activity enhancement in intermetallic structures for oxygen reduction reaction (ORR) originates from the intensified ligand effect. We prepare well-defined model nanocatalysts via confined nanospace-directed synthesis using mesoporous silica templates, which allows control over the size, shape, and atomic ordering of nanostructures. The prepared ordered intermetallic Pt3Co nanowires (O-PtCo NWs) benefitted from the intensified ligand effect, Pt-skin layer, show superior ORR activity and durability to disordered alloy Pt3Co nanowires and Pt/C catalyst. The O-PtCo NWs further exhibited catalytic superiority in hydrogen evolution and methanol oxidation, and demonstrated excellent cell performance in proton exchange membrane fuel cells. |
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dc.identifier.bibliographicCitation |
2019 KIChE Spring Meeting |
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dc.identifier.uri |
https://scholarworks.unist.ac.kr/handle/201301/79930 |
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dc.publisher |
Korean Institute of Chemical Engineers |
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dc.title |
Pt-Based Intermetallic Nanostructures: Activity Origin and Multifunctionality for Efficient Electrocatalysis |
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dc.type |
Conference Paper |
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dc.date.conferenceDate |
2019-04-24 |
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