Ultrafine ruthenium-based nanoclusters regulated by a three-phase heterogeneous interface exhibiting superior mass activity for alkaline hydrogen evolution

被引：1

作者：

Zhu, Xinyu ^{[1
]}

Fang, Minghao ^{[1
]}

Yang, Bozhi ^{[1
]}

Yang, Shujie ^{[1
]}

Li, Xin ^{[1
]}

Li, Yanghong ^{[1
]}

Zhan, Meiling ^{[1
]}

Min, Xin ^{[1
]}

机构：

[1] China Univ Geosci Beijing, Engn Res Ctr,Minist Educ Geol Carbon Storage & Low, Beijing Key Lab Mat Utilizat Nonmet Minerals & Sol, Natl Lab Mineral Mat,Sch Mat Sci & Technol, Beijing 100083, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2024年 / 505卷

基金：

中国国家自然科学基金;

关键词：

Hydrogen evolution reaction; Three-phase interface; Heterostructure; Ruthenium-based; Alkaline environment; ELASTIC BAND METHOD; NI(OH)(2); CATALYST; OXIDATION; NANOPARTICLES; PERFORMANCE; GRAPHENE; DESIGN; MOS2; UREA;

D O I：

10.1016/j.electacta.2024.144953

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Platinum-based catalysts are considered the most effective catalysts for the hydrogen evolution reaction (HER) in acidic media; however, they exhibit poor performance in alkaline electrolysis waters, which are currently more commercially developed, due to their sluggish water dissociation ability. Small-sized metal Ru nanoparticles, with metal-hydrogen bond strength close to Pt (approximately 65 kcal/mol) and a relatively lower water dissociation barrier, are considered one of the most promising alternatives to the noble metal Pt for alkaline HER. Based on the above statements, the present study innovatively combines the effective strategies of "heterogeneous interface engineering" and "construction of ultrafine active sites" to develop a highly efficient Ru-based catalyst with a three-phase heterogeneous interface, aiming to form its application in alkaline HER. Characterization analysis and DFT calculations demonstrated that the "Rux-Ni(OH)(2)-NiO" three-phase heterogeneous interface constructed around ultrafine Rux clusters effectively modulated the electronic structure of the overall material and optimized the HER kinetic steps. This catalytic material, Rux@NOH/NO, exhibited outstanding electrocatalytic activity in alkaline HER, requiring only 44.2 mV to drive a current density of 10 mA center dot cm(-2), with excellent long-term stability and extremely low active material loading (1.36 wt%-Ru). Specially, its mass activity reached an impressive 18,897.1 A/gRu at 150 mV, which is 10.2 times higher than that of commercial 20wt % Pt/C. In summary, this study synergistically constructs an ultrafine metal ruthenium-based catalyst based on a three-phase heterogeneous interface using a composite strategy, which provides an effective catalyst system for alkaline HER catalytic reactions and holds significance for the rational construction and design of efficient heterogeneous interface electrocatalysts.

引用

页数：12