| 论文标题 |
Engineering the electronic and strained interface for high activity of PdMcore@ Ptmonolayer electrocatalysts for oxygen reduction reaction |
| 作者 |
Haoxiong Nan, Ya-Qiong Su, Cheng Tang, Rui Cao, Dong Li, Jia Yu, Quanbing Liu, Y |
| 发表/完成日期 |
2020-04-09 |
| 期刊名称 |
Science Bulletin |
| 期卷 |
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| 相关文章 |
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| 论文简介 |
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 … |
(创新港)
