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Moving beyond bimetallic-alloy to single-atom dimer atomic-interface for all-pH hydrogen evolution

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dc.contributor.authorAshwani Kumar-
dc.contributor.authorViet Q. Bui-
dc.contributor.authorJinsun Lee-
dc.contributor.authorLingling Wang-
dc.contributor.authorAmol R. Jadhav-
dc.contributor.authorXinghui Liu-
dc.contributor.authorXiaodong Shao-
dc.contributor.authorYang Liu-
dc.contributor.authorJianmin Yu-
dc.contributor.authorYosep Hwang-
dc.contributor.authorHuong T. D. Bui-
dc.contributor.authorSara Ajmal-
dc.contributor.authorKim, Min Gyu-
dc.contributor.authorKim, Seong-Gon-
dc.contributor.authorPark, Gyeong-Su-
dc.contributor.authorKawazoe, Yoshiyuki-
dc.contributor.authorHyoyoung Lee-
dc.date.accessioned2022-01-05T00:30:31Z-
dc.date.available2022-01-05T00:30:31Z-
dc.date.created2021-12-15-
dc.date.issued2021-11-19-
dc.identifier.issn2041-1723-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/10999-
dc.description.abstract© 2021, The Author(s).Single-atom-catalysts (SACs) afford a fascinating activity with respect to other nanomaterials for hydrogen evolution reaction (HER), yet the simplicity of single-atom center limits its further modification and utilization. Obtaining bimetallic single-atom-dimer (SAD) structures can reform the electronic structure of SACs with added atomic-level synergistic effect, further improving HER kinetics beyond SACs. However, the synthesis and identification of such SAD structure remains conceptually challenging. Herein, systematic first-principle screening reveals that the synergistic interaction at the NiCo-SAD atomic interface can upshift the d-band center, thereby, facilitate rapid water-dissociation and optimal proton adsorption, accelerating alkaline/acidic HER kinetics. Inspired by theoretical predictions, we develop a facile strategy to obtain NiCo-SAD on N-doped carbon (NiCo-SAD-NC) via in-situ trapping of metal ions followed by pyrolysis with precisely controlled N-moieties. X-ray absorption spectroscopy indicates the emergence of Ni-Co coordination at the atomic-level. The obtained NiCo-SAD-NC exhibits exceptional pH-universal HER-activity, demanding only 54.7 and 61 mV overpotentials at −10 mA cm−2 in acidic and alkaline media, respectively. This work provides a facile synthetic strategy for SAD catalysts and sheds light on the fundamentals of structure-activity relationships for future applications.-
dc.language영어-
dc.publisherNature Research-
dc.titleMoving beyond bimetallic-alloy to single-atom dimer atomic-interface for all-pH hydrogen evolution-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000720682600010-
dc.identifier.scopusid2-s2.0-85119404120-
dc.identifier.rimsid76930-
dc.contributor.affiliatedAuthorAshwani Kumar-
dc.contributor.affiliatedAuthorViet Q. Bui-
dc.contributor.affiliatedAuthorJinsun Lee-
dc.contributor.affiliatedAuthorLingling Wang-
dc.contributor.affiliatedAuthorAmol R. Jadhav-
dc.contributor.affiliatedAuthorXinghui Liu-
dc.contributor.affiliatedAuthorXiaodong Shao-
dc.contributor.affiliatedAuthorYang Liu-
dc.contributor.affiliatedAuthorJianmin Yu-
dc.contributor.affiliatedAuthorYosep Hwang-
dc.contributor.affiliatedAuthorHuong T. D. Bui-
dc.contributor.affiliatedAuthorSara Ajmal-
dc.contributor.affiliatedAuthorHyoyoung Lee-
dc.identifier.doi10.1038/s41467-021-27145-3-
dc.identifier.bibliographicCitationNature Communications, v.12, no.1-
dc.relation.isPartOfNature Communications-
dc.citation.titleNature Communications-
dc.citation.volume12-
dc.citation.number1-
dc.type.docTypeArticle-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalResearchAreaScience & Technology - Other Topics-
dc.relation.journalWebOfScienceCategoryMultidisciplinary Sciences-
dc.subject.keywordPlusELECTROCATALYSTS-
dc.subject.keywordPlusOXYGEN-
dc.subject.keywordPlusNANOSTRUCTURES-
dc.subject.keywordPlusIDENTIFICATION-
dc.subject.keywordPlusSITES-
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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