DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Dokyoung | - |
dc.contributor.author | Jeong, Yongjae | - |
dc.contributor.author | Roh, Hyogyun | - |
dc.contributor.author | Lim, Chaeeun | - |
dc.contributor.author | Yong, Kijung | - |
dc.date.accessioned | 2021-06-13T02:50:20Z | - |
dc.date.available | 2021-06-13T02:50:20Z | - |
dc.date.created | 2021-06-10 | - |
dc.date.issued | 2021-05 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/106674 | - |
dc.description.abstract | The design of efficient nanostructured electrocatalysts is highly desirable for promoting the hydrogen/oxygen evolution reactions (HER/OER), which are key processes of ecofriendly H-2 production in water splitting systems. In this study, we present novel biomimetic hierarchical nanocoral reef materials as efficient and durable electrocatalysts for alkaline water splitting. Our nanocoral reef catalyst has a unique structure consisting of Ni(Co,Fe)P nanosheet (NS) algae and WOx nanowire (NW) corals. The WOx NW corals effectively transport charges (e(-)/h(+)) to the Ni(Co,Fe)P NS algae through a 1D directional structure. The ultrathin 2D Ni(Co,Fe)P NS algae grown on the WOx NW corals provide an abundance of active sites for splitting water molecules into H-2 and O-2. As a result, our hierarchical 2D-NS/1D-NW-structured NiCoP-WOx (HER) and NiFeP-WOx (OER) catalysts demonstrate excellent activities, requiring low overpotentials of 49 and 270 mV, respectively, to generate a current density of 10 mA cm(-2). Additionally, they exhibit high electrochemical stability for over 60 h in 1 M KOH. In addition, the overall water splitting (OWS) system, NiCoP-WOx(HER)||NiFeP-WOx(OER) requires a cell voltage of 1.51 V to generate a current density of 10 mA cm(-2). This value is very low compared to other reported transition metal phosphides. The biomimetic engineering presented in the current study provides not only efficient electrocatalysts but also a promising, useful strategy to develop functional 1D/2D hierarchical materials for advanced energy applications. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.title | Biomimetic 2D-Ni(Co,Fe)P/1D-WOx nanocoral reef electrocatalysts for efficient water splitting | - |
dc.type | Article | - |
dc.identifier.doi | 10.1039/d1ta01977e | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.9, no.17, pp.10909 - 10920 | - |
dc.identifier.wosid | 000642225900001 | - |
dc.citation.endPage | 10920 | - |
dc.citation.number | 17 | - |
dc.citation.startPage | 10909 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 9 | - |
dc.contributor.affiliatedAuthor | Kim, Dokyoung | - |
dc.contributor.affiliatedAuthor | Jeong, Yongjae | - |
dc.contributor.affiliatedAuthor | Roh, Hyogyun | - |
dc.contributor.affiliatedAuthor | Lim, Chaeeun | - |
dc.contributor.affiliatedAuthor | Yong, Kijung | - |
dc.identifier.scopusid | 2-s2.0-85105571138 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
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