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

🤖 Plain-English Summary

Abstract Single-atom catalysts provide an effective approach to reduce the amount of precious metals meanwhile maintain their catalytic activity. A further enhancement is achieved by constructing Pt SA -NiO/Ni nanosheets on Ag nanowires to form a hierarchical three-dimensional morphology.

🔑 Key Findings

• 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 (Pt SA -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.

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