| Autor: |
Zhu, Xinyu, Fang, Minghao, Yang, Bozhi, Zhan, Meiling, Ke, Shaorou, Yang, Fan, Wu, Xiaowen, Liu, Yangai, Huang, Zhaohui, Min, Xin |
| Zdroj: |
Journal of Materials Chemistry A; 2/21/2024, Vol. 12 Issue 7, p4108-4122, 15p |
| Abstrakt: |
Loaded single-atom catalysts (SACs) exhibit high potential for electrocatalytic hydrogen evolution reactions (HER) owing to their unsaturated coordination environments and quantum size effects. However, SACs with only one active center can limit reactions involving multiple atoms, affecting adsorption efficiency. This paper presents a synergistic catalyst, Pt1Rux@C, successfully synthesized using an efficient microwave reduction strategy to load Pt1 atoms and Rux clusters onto carbon black for electrocatalytic HER in just 50 seconds. Characterization and theoretical calculations show that the interaction between Pt1 and Rux on the Pt1Rux@C surface optimizes HER kinetics and achieves unique acid/alkaline reactivity. Pt1Rux@C requires overpotentials of only 90.2 mV (acidic)/141.8 mV (alkaline) to achieve current densities of 100 mA cm−2 (acidic)/40 mA cm−2 (alkaline), outperforming commercial 20 wt% Pt/C. It also exhibits a low Tafel slope, high activity, and excellent stability. In conclusion, this study introduces a new path for efficient, cost-effective, and controllable electrocatalyst development. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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