DC Field | Value | Language |
---|---|---|
dc.contributor.author | Shin, SangYong | ko |
dc.contributor.author | Kim, Hee Eun | ko |
dc.contributor.author | Kim, Beom-Sik | ko |
dc.contributor.author | Jeon, Sun Seo | ko |
dc.contributor.author | Jeong, Hojin | ko |
dc.contributor.author | Lee, Hyunjoo | ko |
dc.date.accessioned | 2023-12-13T10:02:47Z | - |
dc.date.available | 2023-12-13T10:02:47Z | - |
dc.date.created | 2023-11-27 | - |
dc.date.issued | 2022-05-10 | - |
dc.identifier.citation | 2022 MRS Spring Meeting & Exhibit, pp.3716 - 3719 | - |
dc.identifier.uri | http://hdl.handle.net/10203/316402 | - |
dc.description.abstract | A few studies have claimed that Pt single-atom catalysts (SACs) can catalyze the oxygen reduction reaction (ORR) following a four-electron pathway (O2+4H++4e−→2H2O). Here, we show that, in the presence of a seemingly negligible amount of Pt nanoparticles, the ORR can mistakenly be thought to occur via a four-electron pathway on Pt SACs. Various weight percentages (1, 2, 4, 8 wt%) of Pt SACs were prepared on C3N4 layers deposited on a carbon support (C@C3N4). Through a combination of H2/CO uptakes and high angle annular dark field scanning transmission electron microscopy (HAADF-STEM) results, the amount of Pt nanoparticles could be estimated when they were mixed with Pt single atoms. Particularly, most of Pt in the 4 wt% Pt catalyst existed as single atoms, but a small number of Pt nanoparticles co-existed. Although this catalyst seemed to follow the four-electron pathway, the reaction actually occurred on Pt nanoparticles, not Pt single-atoms. | - |
dc.language | English | - |
dc.publisher | Materials Research Society | - |
dc.title | Seemingly Negligible Amounts of Platinum Nanoparticles Mislead Electrochemical Oxygen Reduction Reaction Pathway on Platinum Single‐Atom Catalysts | - |
dc.type | Conference | - |
dc.type.rims | CONF | - |
dc.citation.beginningpage | 3716 | - |
dc.citation.endingpage | 3719 | - |
dc.citation.publicationname | 2022 MRS Spring Meeting & Exhibit | - |
dc.identifier.conferencecountry | US | - |
dc.identifier.conferencelocation | Honolulu, HI | - |
dc.identifier.doi | 10.1002/celc.202000926 | - |
dc.contributor.localauthor | Lee, Hyunjoo | - |
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