Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Noh, Seung Hyo | - |
dc.contributor.author | Seo, Min Ho | - |
dc.contributor.author | Kang, Joonhee | - |
dc.contributor.author | Okajima, Takeyoshi | - |
dc.contributor.author | Han, Byungchan | - |
dc.contributor.author | Ohsaka, Takeo | - |
dc.date.available | 2017-07-05T08:34:37Z | - |
dc.date.created | 2017-04-10 | - |
dc.date.issued | 2016-09 | - |
dc.identifier.issn | 1884-4049 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/2207 | - |
dc.description.abstract | The identification and development of efficient catalysts made of non-precious materials for oxygen reduction reaction (ORR) are essential for the successful operation of a wide range of energy devices. This study provides evidence that earth-abundant nanoparticles of transition metals encapsulated in a nitrogen-doped carbon shell (M@N-C, M = Fe, Co, Ni, Cu or Fe alloys) are promising catalysts in acidic solutions. By density functional theory calculations and experimental validations, we quantitatively propose a method of tuning the ORR activity of M@N-C by controlling the nitrogen-doping level, the thickness of the N-C shells and binary alloying. FeCo@N-C/KB was chosen as the best ORR catalyst because of its onset and half-wave potentials of 0.92 and 0.74 V vs a reversible hydrogen electrode (RHE), respectively, and its excellent durability. Furthermore, FeCo@N-C/KB possesses a high activity for the hydrogen evolution reaction (HER; -0.24 V vs RHE at -10 mA cm(-2)), thus demonstrating that it is a good bi-functional ORR and HER catalyst in acidic media. | - |
dc.publisher | Nature Publishing Group | - |
dc.title | Towards a comprehensive understanding of FeCo coated with N-doped carbon as a stable bi-functional catalyst in acidic media | - |
dc.type | Article | - |
dc.identifier.doi | 10.1038/am.2016.142 | - |
dc.identifier.scopusid | 2-s2.0-85010643915 | - |
dc.identifier.bibliographicCitation | NPG Asia Materials, v.8, no.9 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordPlus | AB-INITIO | - |
dc.subject.keywordPlus | Graphene | - |
dc.subject.keywordPlus | HIGH ELECTROCATALYTIC ACTIVITY | - |
dc.subject.keywordPlus | Hydrogen Evolution Reaction | - |
dc.subject.keywordPlus | Iron | - |
dc.subject.keywordPlus | NANOTUBES | - |
dc.subject.keywordPlus | Nitrogen | - |
dc.subject.keywordPlus | Oxygen Reduction Reaction | - |
dc.subject.keywordPlus | Surface Segregation | - |
dc.subject.keywordPlus | 1ST-PRINCIPLES | - |
dc.citation.number | 9 | - |
dc.citation.title | NPG Asia Materials | - |
dc.citation.volume | 8 | - |