Gas-balancing adsorption strategy towards noble-metal-based nanowire electrocatalysts

Liang, Jiashun1; Li, Shenzhou1; Liu, Xuan1; Wan, Yangyang2,3; Xia, Yu4,5; Shi, Hao1; Zhang, Siyang1; Wang, Hsing-Lin4; Lu, Gang3; Wu, Gang6; Huang, Yunhui1; Li, Qing1

2024-06-01

10.1038/s41929-024-01167-8

NATURE CATALYSIS   影响因子和分区

2520-1158

The preparation of noble metal nanowire electrocatalysts is greatly limited by the thermodynamically symmetric growth of face-centred-cubic structures. Here we report a gas-balancing adsorption strategy to prepare ultrathin palladium-, platinum- and gold-based nanowires (diameter < 2 nm) by controlling the competitive adsorption of in situ-generated H-2 and CO. We prepare a library of 43 nanowires consisting of the three above-mentioned noble metals as hosts and 14 metals as guests. The ternary Pd85Pt8Ni7H41 nanowires with interstitial hydrogen exhibit impressive mass and specific activities of 11.1AmgPGM(-1) and 13.9 mA cm(-2), respectively, for the oxygen reduction reaction at 0.9 V-RHE in alkali. Operando X-ray absorption spectroscopy demonstrates breathing-like Pd-Pd bond length and strain changes at the applied potential, with Pd85Pt8Ni7H41 nanowires exhibiting larger compressive strain at relevant potentials, as well as low oxygen coverage. Theoretical calculations suggest that the interstitial hydrogen induces an s-d orbital interaction between palladium and hydrogen, which enhances the activity of the oxygen reduction reaction. The Pd85Pt8Ni7H41 nanowires can generate a high power density of 0.87 W cm(-2) in H-2/air (CO2-free) at 70 degrees C in an anion-exchange membrane fuel cell.

SCI ; EI

英语

其他

National Natural Science Foundation of China (National Science Foundation of China)[22122202] ; National Natural Science Foundation of China["2021YFA1501001","2021YFA1600800"] ; National Key Research and Development Program of China[DMR-1828019]

Chemistry

Chemistry, Physical

WOS:001238120600001

NATURE PORTFOLIO

Web of Science

1.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan, Hubei, Peoples R China
2.Jiangsu Univ, Inst Adv Mat, Sch Mat Sci & Engn, Zhenjiang, Peoples R China
3.Calif State Univ Northridge, Dept Phys & Astron, Northridge, CA USA
4.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen, Peoples R China
5.Univ Birmingham, Sch Phys & Astron, Birmingham, England
6.SUNY Buffalo, Dept Chem & Biol Engn, Buffalo, NY USA

Liang, Jiashun,Li, Shenzhou,Liu, Xuan,et al. Gas-balancing adsorption strategy towards noble-metal-based nanowire electrocatalysts[J]. NATURE CATALYSIS,2024.

Liang, Jiashun.,Li, Shenzhou.,Liu, Xuan.,Wan, Yangyang.,Xia, Yu.,...&Li, Qing.(2024).Gas-balancing adsorption strategy towards noble-metal-based nanowire electrocatalysts.NATURE CATALYSIS.

Liang, Jiashun,et al."Gas-balancing adsorption strategy towards noble-metal-based nanowire electrocatalysts".NATURE CATALYSIS (2024).