globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.04.015
论文题名:
Engineering the electronic and strained interface for high activity of PdMcore@Ptmonolayer electrocatalysts for oxygen reduction reaction
作者: Nan H.; Su Y.-Q.; Tang C.; Cao R.; Li D.; Yu J.; Liu Q.; Deng Y.; Tian X.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期:16
起始页码: 1396
结束页码: 1404
语种: 英语
中文关键词: Diverse interfaces ; Fuel cells ; Interface engineering ; Oxygen reduction reaction ; Pt monolayer
英文关键词: Binary alloys ; Density functional theory ; Electrocatalysts ; Electrolysis ; Electrolytic reduction ; Extended X ray absorption fine structure spectroscopy ; Gas adsorption ; Iron alloys ; Lattice mismatch ; Lattice theory ; Nanoparticles ; Oxygen ; Palladium alloys ; Platinum ; Shells (structures) ; Synthesis (chemical) ; X ray absorption ; Catalytic performance ; Core shell structure ; Density functional theory simulations ; Electrocatalytic activity ; Extended x-ray absorption fine structure analysis ; Interfacial electron transfer ; Interfacial interaction ; Strained interfaces ; Oxygen reduction reaction
英文摘要: Alloyed nanoparticles with core-shell structures provide a favorable model to modulate interfacial interaction and surface structures at the atomic level, which is important for designing electrocatalysts with high activity and durability. Herein, core-shell structured Pd3M@Pt/C nanoparticles with binary PdM alloy cores (M = Fe, Ni, and Co) and a monolayer Pt shell were successfully synthesized with diverse interfaces. Among these, Pd3Fe@Pt/C exhibited the best oxygen reduction reaction catalytic performance, roughly 5.4 times more than that of the commercial Pt/C catalyst used as reference. The significantly enhanced activity is attributed to the combined effects of strain engineering, interfacial electron transfer, and improved Pt utilization. Density functional theory simulations and extended X-ray absorption fine structure analysis revealed that engineering the alloy core with moderate lattice mismatch and alloy composition (Pd3Fe) optimizes the surface oxygen adsorption energy, thereby rendering excellent electrocatalytic activity. Future researches may use this study as a guide on the construction of highly effective core-shell electrocatalysts for various energy conversions and other applications. © 2020 Science China Press
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170007
Appears in Collections:气候变化与战略

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作者单位: School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China; Laboratory of Inorganic Materials & Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, MB Eindhoven, 5600, Netherlands; School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, United States; Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China; The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, China; Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, 523808, China; State Key Laboratory of Marine Resource Utilization in South China Sea, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China

Recommended Citation:
Nan H.,Su Y.-Q.,Tang C.,et al. Engineering the electronic and strained interface for high activity of PdMcore@Ptmonolayer electrocatalysts for oxygen reduction reaction[J]. Science Bulletin,2020-01-01,65(16)
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