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DC Field | Value | Language |
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dc.citation.startPage | 126513 | - |
dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 404 | - |
dc.contributor.author | Dang, Ngoc K. | - |
dc.contributor.author | Tiwari, Jitendra N. | - |
dc.contributor.author | Sultan, Siraj | - |
dc.contributor.author | Meena, Abhishek | - |
dc.contributor.author | Kim, Kwang S. | - |
dc.date.accessioned | 2023-12-21T16:22:46Z | - |
dc.date.available | 2023-12-21T16:22:46Z | - |
dc.date.created | 2021-02-17 | - |
dc.date.issued | 2021-01 | - |
dc.description.abstract | Developing high-performance, stable and low-cost oxygen evolution reaction (OER) catalysts are pivotal for electrochemical water splitting and rechargeable metal-air batteries. In this work, we report an OER catalyst comprising Cr-CoFe, CoFe, Co5.47N and Fe3O4 sites embedded in nitrogen-doped graphene (denoted as CCF-1) that operates remarkably in alkaline water. This catalyst requires only 210/290 mV overpotential to generate current densities of 10/500 mA cm(-2) with small Tafel slope (39.1 mV dec(-1)) which is much better than the state-of-the-art IrO2 catalyst (310 mV @10 mAcm(-2) with Tafel slope of 74.8 mV dec(-1)). This striking OER performance is ascribed to substituted Cr atoms in the host matrix which modulated the geometric site/electronic structure of the catalyst and brings the optimal binding energies for oxygen intermediate with increased charge/mass transfer process for the fast kinetics of the OER reactions. Furthermore, CCF-1 demonstrated excellent OER durability which maintains the stable performance during the 200 h chronoamperometry test in 1 M KOH solution. The high stability of CCF-1 is attributed to the physicochemical protection effect of N doped graphitic layers which prevents the alloy nanoparticles from dissolution/re-deposition and aggregation during the prolonged OER operation. | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.404, pp.126513 | - |
dc.identifier.doi | 10.1016/j.cej.2020.126513 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.scopusid | 2-s2.0-85089158814 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/50044 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S1385894720326413?via%3Dihub | - |
dc.identifier.wosid | 000601347000006 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Multi-site catalyst derived from Cr atoms-substituted CoFe nanoparticles for high-performance oxygen evolution activity | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental; Engineering, Chemical | - |
dc.relation.journalResearchArea | Engineering | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Electrocatalyst | - |
dc.subject.keywordAuthor | Oxygen evolution reaction | - |
dc.subject.keywordAuthor | Alkaline media | - |
dc.subject.keywordAuthor | Nanoparticle | - |
dc.subject.keywordPlus | IN-SITU FORMATION | - |
dc.subject.keywordPlus | BIFUNCTIONAL ELECTROCATALYST | - |
dc.subject.keywordPlus | NANOSHEET ARRAY | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | IDENTIFICATION | - |
dc.subject.keywordPlus | ACTIVATION | - |
dc.subject.keywordPlus | DESIGN | - |
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