Double-Tuned RuCo Dual Metal Single Atoms and Nanoalloy with Synchronously Expedited Volmer/Tafel Kinetics for Effective and Ultrastable Ampere-Level Current Density Hydrogen Production

Wang，Xingkun1,2; Yao，Hanxu1,2; Zhang，Canhui2; Li，Cheng3,4; Tong，Kecheng2; Gu，Meng3; Cao，Zhengwen1; Huang，Minghua2; Jiang，Heqing1

2023

10.1002/adfm.202301804

Advanced Functional Materials   Impact Factor & Quartile

1616-301X

1616-3028

Alkaline water electrolysis system is of general interest but is impeded by the unsatisfactory hydrogen evolution reaction (HER) performance under ampere-level current density. Herein, the synchronous modification of complicated Volmer/Tafel kinetics is effectuated for attaining ampere-level current density hydrogen production via engineering double-tuned RuCo nanoalloy and dual metal single atoms on hierarchical N-doped mesoporous carbon (RuCo@RuCo-NMC). The electronic structure of Ru sites in dual metal single atoms can be synergistically tailored by adjacent Co atomic sites and nanoalloy, which makes it achieve faster Volmer kinetics with rapid water adsorption/dissociation and transfer rates toward adsorbed hydroxyl. While double-tuned Ru sites in nanoalloy by adjacent alloyed Co sites and dual metal single atoms undertake optimized Tafel kinetics with boosted transfer rates toward adsorbed hydrogen. Accordingly, RuCo@RuCo-NMC exhibits ultralow HER overpotential of 255 mV at 1 A cm with robust stability over 24 days, ultrahigh mass activity of 37.2 A mg, and turnover frequency of 19.5 s. More importantly, RuCo@RuCo-NMC can make water electrolysis system possess low power consumption of 5.34 kWh per Nm and estimated costs of 1.197 $ per kg. The concept emphasized in this study provides guidance for rational design of cost-effective catalysts with ampere-level current density hydrogen production.

ampere-level current density dual metal single atoms hydrogen evolution reaction nanoalloys power consumption

SCI

English

NI Journal Papers

Others

National Natural Science Foundation of China["22279124","52261145700"] ; Natural Science Foundation of Shandong Province[ZR2022ZD30] ; National Key Research and Development Project[2022YFA1503900] ; Shenzhen fundamental research funding[JCYJ20210324115809026] ; Qingdao Postdoctoral Applied Research Project[QDBSH20220202011]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001040095600001

WILEY-V C H VERLAG GMBH

MATERIALS SCIENCE

2-s2.0-85166223981

Scopus

1.Qingdao Key Laboratory of Functional Membrane Material and Membrane Technology,Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences,Qingdao,266101,China
2.School of Materials Science and Engineering,Ocean University of China,Qingdao,266101,China
3.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
4.School of Physics and Astronomy,University of Birmingham,Birmingham,B15 2TT,United Kingdom

Wang，Xingkun,Yao，Hanxu,Zhang，Canhui,et al. Double-Tuned RuCo Dual Metal Single Atoms and Nanoalloy with Synchronously Expedited Volmer/Tafel Kinetics for Effective and Ultrastable Ampere-Level Current Density Hydrogen Production[J]. Advanced Functional Materials,2023,33(40).

Wang，Xingkun.,Yao，Hanxu.,Zhang，Canhui.,Li，Cheng.,Tong，Kecheng.,...&Jiang，Heqing.(2023).Double-Tuned RuCo Dual Metal Single Atoms and Nanoalloy with Synchronously Expedited Volmer/Tafel Kinetics for Effective and Ultrastable Ampere-Level Current Density Hydrogen Production.Advanced Functional Materials,33(40).

Wang，Xingkun,et al."Double-Tuned RuCo Dual Metal Single Atoms and Nanoalloy with Synchronously Expedited Volmer/Tafel Kinetics for Effective and Ultrastable Ampere-Level Current Density Hydrogen Production".Advanced Functional Materials 33.40(2023).