Surface-Tailored Medium Entropy Alloys as Radically Low Overpotential Oxygen Evolution Electrocatalysts
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Hoonkee | - |
dc.contributor.author | Bae, Jae Wung | - |
dc.contributor.author | Lee, Tae Hyung | - |
dc.contributor.author | Park, Ik Jae | - |
dc.contributor.author | Kim, Changyeon | - |
dc.contributor.author | Lee, Mi Gyoung | - |
dc.contributor.author | Lee, Sol A. | - |
dc.contributor.author | Yang, Jin Wook | - |
dc.contributor.author | Choi, Min-Ju | - |
dc.contributor.author | Hong, Sung Hyun | - |
dc.contributor.author | Kim, Soo Young | - |
dc.contributor.author | Ahn, Sang Hyun | - |
dc.contributor.author | Kim, Jin Young | - |
dc.contributor.author | Kim, Hyoung Seop | - |
dc.contributor.author | Jang, Ho Won | - |
dc.date.accessioned | 2022-04-02T08:40:22Z | - |
dc.date.available | 2022-04-02T08:40:22Z | - |
dc.date.created | 2022-04-01 | - |
dc.date.issued | 2022-03 | - |
dc.identifier.issn | 1613-6810 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/139485 | - |
dc.description.abstract | Numerous studies have explored new materials for electrocatalysts, but it is difficult to discover materials that surpass the catalytic activity of current commercially available noble metal electrocatalysts. In contrast to conventional transition metal alloys, high-entropy alloys (HEAs) have immense potential to maximize their catalytic properties because of their high stability and compositional diversity as oxygen evolution reactions (OERs). This work presents medium-entropy alloys (MEAs) as OER electrocatalysts to simultaneously satisfy the requirement of high catalytic activity and long-term stability. The surface of MEA electrocatalyst is tailored to suit the OER via anodizing and cyclic voltammetry activation methods. Optimized electrical properties and hydrophilicity of the surface enable an extremely low overpotential of 187 mV for achieving the current density of 10 mA cm(-2) alkaline media. Furthermore, a combined photovoltaic-electrochemical system with MEA electrocatalyst and a perovskite/Si tandem solar cell exhibits a solar-to-hydrogen conversion efficiency of 20.6% for an unassisted hydrogen generation system. These results present a new pathway for designing sustainable high efficiency water splitting cells. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.subject | WATER | - |
dc.subject | PHOTOVOLTAICS | - |
dc.subject | PHOTOANODES | - |
dc.subject | EFFICIENCY | - |
dc.subject | GRAPHENE | - |
dc.subject | SILICON | - |
dc.title | Surface-Tailored Medium Entropy Alloys as Radically Low Overpotential Oxygen Evolution Electrocatalysts | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Soo Young | - |
dc.identifier.doi | 10.1002/smll.202105611 | - |
dc.identifier.scopusid | 2-s2.0-85123470231 | - |
dc.identifier.wosid | 000745482100001 | - |
dc.identifier.bibliographicCitation | SMALL, v.18, no.11 | - |
dc.relation.isPartOf | SMALL | - |
dc.citation.title | SMALL | - |
dc.citation.volume | 18 | - |
dc.citation.number | 11 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | PHOTOVOLTAICS | - |
dc.subject.keywordPlus | PHOTOANODES | - |
dc.subject.keywordPlus | EFFICIENCY | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | SILICON | - |
dc.subject.keywordAuthor | electrocatalysts | - |
dc.subject.keywordAuthor | medium-entropy alloys | - |
dc.subject.keywordAuthor | oxygen evolution reaction | - |
dc.subject.keywordAuthor | photovoltaic-electrochemical systems | - |
dc.subject.keywordAuthor | water splitting | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.