Twin-distortion modulated ultra-low coordination PtRuNi-O<sub>x</sub> catalyst for enhanced hydrogen production from chemical wastewater.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 39578452.
- Also identified by DOI 10.1038/s41467-024-54513-6 and PMC identifier 11584716.
- Licence recorded as CC BY-NC-ND.
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Abstract
The development of efficient and robust catalysts for hydrogen evolution reaction is crucial for advancing the hydrogen economy. In this study, we demonstrate that ultra-low coordinated hollow PtRuNi-O<sub>x</sub> nanocages exhibit superior catalytic activity and stability across varied conditions, notably surpassing commercial Pt/C catalysts. Notably, the PtRuNi-O<sub>x</sub> catalysts achieve current densities of 10 mA cm<sup>-2</sup> at only 19.6 ± 0.1, 20.9 ± 0.1, and 21.0 ± 0.1 mV in alkaline freshwater, chemical wastewater, and seawater, respectively, while maintaining satisfied stability with minimal activity loss after 40,000 cycles. In situ experiments and theoretical calculations reveal that the ultra-low coordination of Pt, Ru, and Ni atoms creates numerous dangling bonds, which lower the water dissociation barrier and optimizing hydrogen adsorption. This research marks a notable advancement in the precise engineering of atomically dispersed multi-metallic centers in catalysts for energy-related applications.