Atomistic understanding of the origin of high oxygen reduction electrocatalytic activity of cuboctahedral Pt3Co-Pt core-shell nanoparticles
文献类型：期刊论文
| 作者 | Hu, GZ (Hu, Guangzhi); Gracia-Espino, E (Gracia-Espino, Eduardo); Sandstrom, R (Sandstrom, Robin); Sharifi, T (Sharifi, Tiva); Cheng, SD (Cheng, Shaodong); Shen, HJ (Shen, Hangjia); Wang, CY (Wang, Chuanyi); Guo, SJ (Guo, Shaojun); Yang, G (Yang, Guang); Wagberg, T (Wagberg, Thomas) |
| 刊名 | CATALYSIS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2016 |
| 卷号 | 6期号:5页码:1393-1401 |
| 英文摘要 | PtM-based core-shell nanoparticles are a new class of active and stable nanocatalysts for promoting oxygen reduction reaction (ORR); however, the understanding of their high electrocatalytic performance for ORR at the atomistic level is still a great challenge. Herein, we report the synthesis of highly ordered and homogeneous truncated cuboctahedral Pt3Co-Pt core-shell nanoparticles (cs-Pt3Co). By combining atomic resolution electron microscopy, X-ray photoelectron spectroscopy, extensive first-principles calculations, and many other characterization techniques, we conclude that the cs-Pt3Co nanoparticles are composed of a complete or nearly complete Pt monolayer skin, followed by a secondary shell containing 5-6 layers with similar to 78 at% of Pt, in a Pt3Co configuration, and finally a Co-rich core with 64 at% of Pt. Only this particular structure is consistent with the very high electrocatalytic activity of cs-Pt3Co nanoparticles for ORR, which is about 6 times higher than commercial 30%-Pt/Vulcan and 5 times more active than non-faceted (spherical) alloy Pt3Co nanoparticles. Our study gives an important insight into the atomistic design and understanding of advanced bimetallic nanoparticles for ORR catalysis and other important industrial catalytic applications. |
| 收录类别 | SCI |
| WOS记录号 | WOS:000371607600014 |
| 源URL | [http://ir.xjipc.cas.cn/handle/365002/4702]  |
| 专题 | 新疆理化技术研究所_环境科学与技术研究室 |
| 作者单位 | 1.Umea Univ, Dept Phys, S-90187 Umea, Sweden 2.Xi An Jiao Tong Univ, Elect Mat Res Lab, Key Lab, Minist Educ, Xian 710049, Peoples R China 3.Xi An Jiao Tong Univ, Int Ctr Dielect Res, Xian 710049, Peoples R China 4.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China 5.Los Alamos Natl Lab, Phys Chem & Appl Spect, POB 1663, Los Alamos, NM 87545 USA |
| 推荐引用方式 GB/T 7714 | Hu, GZ ,Gracia-Espino, E ,Sandstrom, R ,et al. Atomistic understanding of the origin of high oxygen reduction electrocatalytic activity of cuboctahedral Pt3Co-Pt core-shell nanoparticles[J]. CATALYSIS SCIENCE & TECHNOLOGY,2016,6(5):1393-1401. |
| APA | Hu, GZ .,Gracia-Espino, E .,Sandstrom, R .,Sharifi, T .,Cheng, SD .,...&Wagberg, T .(2016).Atomistic understanding of the origin of high oxygen reduction electrocatalytic activity of cuboctahedral Pt3Co-Pt core-shell nanoparticles.CATALYSIS SCIENCE & TECHNOLOGY,6(5),1393-1401. |
| MLA | Hu, GZ ,et al."Atomistic understanding of the origin of high oxygen reduction electrocatalytic activity of cuboctahedral Pt3Co-Pt core-shell nanoparticles".CATALYSIS SCIENCE & TECHNOLOGY 6.5(2016):1393-1401. |
入库方式： OAI收割
来源：新疆理化技术研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。