Harzandi, Ahmad M. Shadman, Sahar Nissimagoudar, Arun S. Kim, Dong Yeon Lim, Hee-Dae Lee, Jong Hoon Kim, Min Gyu Jeong, Hu Young Kim, Youngsik Kim, Kwang S. 2024-01-19T15:30:36Z 2024-01-19T15:30:36Z 2021-09-02 2021-03 1614-6832 https://pubs.kist.re.kr/handle/201004/117375 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. English Wiley-VCH Verlag Ruthenium Core-Shell Engineering with Nickel Single Atoms for Selective Oxygen Evolution via Nondestructive Mechanism Article 10.1002/aenm.202003448 1 Advanced Energy Materials, v.11, no.10 Advanced Energy Materials 11 10 N scie scopus 000611070100001 2-s2.0-85099929890 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Energy & Fuels Materials Science Physics Article GENERALIZED GRADIENT APPROXIMATION WATER OXIDATION HIGH-PERFORMANCE LATTICE OXYGEN CATALYST ELECTROCATALYSTS DISSOLUTION STABILITY HYDROGEN SURFACE lattice oxygen leaching mechanism nickel oxygen evolution reaction ruthenium surface engineering