Platinum single-atom catalyst coupled with transition metal/metal oxide heterostructure for accelerating alkaline hydrogen evolution reaction

Kai Ling Zhou, Zelin Wang, Chang Bao Han (), Xiaoxing Ke (), Changhao Wang, Yuhong Jin, Qianqian Zhang, Jingbing Liu, Hao Wang () and Hui Yan
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Kai Ling Zhou: Beijing University of Technology
Zelin Wang: Beijing University of Technology
Chang Bao Han: Beijing University of Technology
Xiaoxing Ke: Beijing University of Technology
Changhao Wang: Beijing University of Technology
Yuhong Jin: Beijing University of Technology
Qianqian Zhang: Beijing University of Technology
Jingbing Liu: Beijing University of Technology
Hao Wang: Beijing University of Technology
Hui Yan: Beijing University of Technology

Nature Communications, 2021, vol. 12, issue 1, 1-10

Abstract: Abstract Single-atom catalysts provide an effective approach to reduce the amount of precious metals meanwhile maintain their catalytic activity. However, the sluggish activity of the catalysts for alkaline water dissociation has hampered advances in highly efficient hydrogen production. Herein, we develop a single-atom platinum immobilized NiO/Ni heterostructure (PtSA-NiO/Ni) as an alkaline hydrogen evolution catalyst. It is found that Pt single atom coupled with NiO/Ni heterostructure enables the tunable binding abilities of hydroxyl ions (OH*) and hydrogen (H*), which efficiently tailors the water dissociation energy and promotes the H* conversion for accelerating alkaline hydrogen evolution reaction. A further enhancement is achieved by constructing PtSA-NiO/Ni nanosheets on Ag nanowires to form a hierarchical three-dimensional morphology. Consequently, the fabricated PtSA-NiO/Ni catalyst displays high alkaline hydrogen evolution performances with a quite high mass activity of 20.6 A mg−1 for Pt at the overpotential of 100 mV, significantly outperforming the reported catalysts.

Date: 2021
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DOI: 10.1038/s41467-021-24079-8

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