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DC Field | Value | Language |
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dc.citation.endPage | 13822 | - |
dc.citation.number | 34 | - |
dc.citation.startPage | 13087 | - |
dc.citation.title | CHEMICAL SCIENCE | - |
dc.citation.volume | 15 | - |
dc.contributor.author | Lim, June Sung | - |
dc.contributor.author | Woo, Jinwoo | - |
dc.contributor.author | Bae, Geunsu | - |
dc.contributor.author | Yoo, Suhwan | - |
dc.contributor.author | Kim, Jinjong | - |
dc.contributor.author | Kim, Jae Hyung | - |
dc.contributor.author | Lee, Jong Hoon | - |
dc.contributor.author | Sa, Young Jin | - |
dc.contributor.author | Jang, Ji-Wook | - |
dc.contributor.author | Hwang, Yun Jeong | - |
dc.contributor.author | Choi, Chang Hyuck | - |
dc.contributor.author | Joo, Sang Hoon | - |
dc.date.accessioned | 2024-08-27T10:35:12Z | - |
dc.date.available | 2024-08-27T10:35:12Z | - |
dc.date.created | 2024-08-21 | - |
dc.date.issued | 2024-09 | - |
dc.description.abstract | Electrochemical hydrogen peroxide (H2O2) production via two-electron oxygen reduction reaction (2e- ORR) has received increasing attention as it enables clean, sustainable, and on-site H2O2 production. Mimicking the active site structure of H2O2 production enzymes, such as nickel superoxide dismutase, is the most intuitive way to design efficient 2e- ORR electrocatalysts. However, Ni-based catalysts have thus far shown relatively low 2e- ORR activity. In this work, we present the design of high-performing, atomically dispersed Ni-based catalysts (Ni ADCs) for H2O2 production through understanding the formation chemistry of the Ni-based active sites. The use of a precoordinated precursor and pyrolysis within a confined nanospace were found to be essential for generating active Ni-Nx sites in high density and increasing carbon yields, respectively. A series of model catalysts prepared from coordinating solvents having different vapor pressures gave rise to Ni ADCs with controlled ratios of Ni-Nx sites and Ni nanoparticles, which revealed that the Ni-Nx sites have greater 2e- ORR activity. Another set of Ni ADCs identified the important role of the degree of distortion from the square planar structure in H2O2 electrosynthesis activity. The optimized catalyst exhibited a record H2O2 electrosynthesis mass activity with excellent H(2)O(2 )selectivity. | - |
dc.identifier.bibliographicCitation | CHEMICAL SCIENCE, v.15, no.34, pp.13087 - 13822 | - |
dc.identifier.doi | 10.1039/d4sc03105a | - |
dc.identifier.issn | 2041-6520 | - |
dc.identifier.scopusid | 2-s2.0-85200771865 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/83566 | - |
dc.identifier.wosid | 001284476400001 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Understanding the preparative chemistry of atomically dispersed nickel catalysts for achieving high-efficiency H2O2 electrosynthesis | - |
dc.type | Article | - |
dc.description.isOpenAccess | TRUE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.type.docType | Article; Early Access | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | SUPEROXIDE ANION | - |
dc.subject.keywordPlus | INTERMEDIATE | - |
dc.subject.keywordPlus | METAL | - |
dc.subject.keywordPlus | OXYGEN REDUCTION REACTION | - |
dc.subject.keywordPlus | HYDROGEN-PEROXIDE | - |
dc.subject.keywordPlus | ELECTROCATALYTIC REDUCTION | - |
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