Lee, Kug-Seung Cho, Yong-Hun Jeon, Tae-Yeol Yoo, Sung Jong Park, Hee-Young Jang, Jong Hyun Sung, Yung-Eun 2024-01-20T15:01:33Z 2024-01-20T15:01:33Z 2021-09-05 2012-05 2155-5435 https://pubs.kist.re.kr/handle/201004/129308 PtRu overlayers were deposited on carbon-supported Ir nanoparticles with various Pt:Ru compositions. Structural and electrochemical characterizations were performed using transmission electron microscopy (TEM), X-ray diffraction, high-resolution powder diffraction (HRPD), X-ray photoelectron spectroscopy (XPS), cyclic voltammetry (CV), and CO stripping voltammetry. The PtRu overlayers were selectively deposited on the Ir nanoparticles with good uniformity of distribution. As a result, the PtRu utilization of the present samples was higher than that of PtRu/C. The mass-specific activities for methanol oxidation were also significantly higher. Single-cell performance using the Pt2Ru1 overlayer sample as an anode catalyst was slightly higher than that obtained using commercial PtRu/C despite the fact that the PtRu anode loading for Pt2Ru1/Ir/C was only 42% of that of PtRu/C. English AMER CHEMICAL SOC OXYGEN REDUCTION REACTION MODIFIED AU NANOPARTICLES CORE-SHELL NANOPARTICLES PLATINUM-MONOLAYER SHELL METHANOL ELECTROOXIDATION ELECTROCATALYTIC ACTIVITY STABILITY CATALYSTS PERFORMANCE REACTIVITY Surface Structures and Electrochemical Activities of PtRu Over layers on Ir Nanoparticles Article 10.1021/cs2006907 1 ACS CATALYSIS, v.2, no.5, pp.739 - 745 ACS CATALYSIS 2 5 739 745 scie scopus 000303492400006 2-s2.0-84860703676 Chemistry, Physical Chemistry Article OXYGEN REDUCTION REACTION MODIFIED AU NANOPARTICLES CORE-SHELL NANOPARTICLES PLATINUM-MONOLAYER SHELL METHANOL ELECTROOXIDATION ELECTROCATALYTIC ACTIVITY STABILITY CATALYSTS PERFORMANCE REACTIVITY core/shell Structure PtRu overlayer Ir nanoparticle methanol oxidation reaction surface modification