中文版 | English
Title

Atomic ruthenium modification of nickel-cobalt alloy for enhanced alkaline hydrogen evolution

Author
Corresponding AuthorZhu,Yanping
Publication Years
2023-08-15
DOI
Source Title
ISSN
0926-3373
Volume331
Abstract
Density functional theory (DFT) is used to predict the behavior of ruthenium-doped nickel cobalt alloy in the alkaline hydrogen evolution reaction (HER). According to DFT calculation, a synergistic effect at the Ru-Ni/Co interface is generated to accelerate water dissociation and optimize the adsorption-desorption energetics toward the H intermediate. However, excessive Ru introduction will lead to over-strong hydrogen adsorption on the catalyst surface, thus limiting H release. As a proof of concept, we design a series of NiCoRu/SP, among which the optimized NiCoRu/SP electrocatalyst achieves an overpotential of 59 mV at 10 mA cm, while excessive Ru incorporation (NiCoRu/SP) diminishes the HER activity. X-ray absorption spectroscopy and other characterizations further confirm that the interface-induced electron transfer from atomic Ru to its surrounding Ni/Co, and the activity degradation caused by excessive Ru incorporation is attributed to the generation of Ru cluster that sacrifices the interface between Ru atom and Ni/Co.
Keywords
URL[Source Record]
Language
English
SUSTech Authorship
Others
Funding Project
Hong Kong Polytechnic University[1-YWB6];Hong Kong Polytechnic University[1-YY4A];Hong Kong Polytechnic University[1-ZE2F];
ESI Research Field
CHEMISTRY
Scopus EID
2-s2.0-85151565178
Data Source
Scopus
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/524088
DepartmentDepartment of Materials Science and Engineering
Affiliation
1.Department of Applied Physics,The Hong Kong Polytechnic University,Hung Hom,Kowloon,Hong Kong
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,Nanshan District, Guangdong,China
3.Faculty of System Design and Intelligent Manufacturing,Southern University of Science and Technology,Shenzhen,Nanshan District, Guangdong,China
First Author AffilicationDepartment of Materials Science and Engineering
Recommended Citation
GB/T 7714
Li,Liuqing,Qiu,Haifa,Zhu,Yanping,et al. Atomic ruthenium modification of nickel-cobalt alloy for enhanced alkaline hydrogen evolution[J]. Applied Catalysis B: Environmental,2023,331.
APA
Li,Liuqing.,Qiu,Haifa.,Zhu,Yanping.,Chen,Gao.,She,Sixuan.,...&Huang,Haitao.(2023).Atomic ruthenium modification of nickel-cobalt alloy for enhanced alkaline hydrogen evolution.Applied Catalysis B: Environmental,331.
MLA
Li,Liuqing,et al."Atomic ruthenium modification of nickel-cobalt alloy for enhanced alkaline hydrogen evolution".Applied Catalysis B: Environmental 331(2023).
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