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Jeong, Hu Young
UNIST Central Research Facilities (UCRF)
Research Interests
  • Soft material characterization such as graphene using a low kV Cs-corrected TEM
  • Insitu-TEM characterization of carbon-based materials using nanofactory STM holder for Li-ion battery application
  • Structural characterization of mesoporous materials using SEM & TEM
  • Interface analysis between various oxides and metals through Cs-corrected (S)TEM
  • Resistive switching mechanism of graphene oxide thin films for RRAM application

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Ruthenium Core-Shell Engineering with Nickel Single Atoms for Selective Oxygen Evolution via Nondestructive Mechanism

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dc.contributor.author Harzandi, Ahmad M. ko
dc.contributor.author Shadman, Sahar ko
dc.contributor.author Nissimagoudar, Arun S. ko
dc.contributor.author Kim, Dong Yeon ko
dc.contributor.author Lim, Hee-Dae ko
dc.contributor.author Lee, Jong Hoon ko
dc.contributor.author Kim, Min Gyu ko
dc.contributor.author Jeong, Hu Young ko
dc.contributor.author Kim, Youngsik ko
dc.contributor.author Kim, Kwang S. ko
dc.date.available 2021-12-16T08:00:13Z -
dc.date.created 2021-12-15 ko
dc.date.issued 2021-03 ko
dc.identifier.citation ADVANCED ENERGY MATERIALS, v.11, no.10, pp.2003448 ko
dc.identifier.issn 1614-6832 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/55185 -
dc.description.abstract To develop effective electrocatalytic splitting of acidic water, which is a key reaction for renewable energy conversion, the fundamental understanding of sluggish/destructive mechanism of the oxygen evolution reaction (OER) is essential. Through investigating atom/proton/electron transfers in the OER, the distinctive acid-base (AB) and direct-coupling (DC) lattice oxygen mechanisms (LOMs) and adsorbates evolution mechanism (AEM) are elucidated, depending on the surface-defect engineering condition. The designed catalysts are composed of a compressed metallic Ru-core and oxidized Ru-shell with Ni single atoms (SAs). The catalyst synthesized with hot acid treatment selectively follows AB-LOM, exhibiting simultaneously enhanced activity and stability. It produces a current density of 10/100 mA cm(-2) at a low overpotential of 184/229 mV and sustains water oxidation at a high current density of up to 20 mA cm(-2) over approximate to 200 h in strongly acidic media. ko
dc.language 영어 ko
dc.publisher WILEY-V C H VERLAG GMBH ko
dc.title Ruthenium Core-Shell Engineering with Nickel Single Atoms for Selective Oxygen Evolution via Nondestructive Mechanism ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85099929890 ko
dc.identifier.wosid 000611070100001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1002/aenm.202003448 ko
dc.identifier.url https://onlinelibrary.wiley.com/doi/10.1002/aenm.202003448 ko
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