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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


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

DC Field Value Language Harzandi, Ahmad M. ko Shadman, Sahar ko Nissimagoudar, Arun S. ko Kim, Dong Yeon ko Lim, Hee-Dae ko Lee, Jong Hoon ko Kim, Min Gyu ko Jeong, Hu Young ko Kim, Youngsik ko Kim, Kwang S. ko 2021-12-16T08:00:13Z - 2021-12-15 ko 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 -
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 ko
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