Effect of silver electrode wetting state on oxygen reduction electrochemistry
| Autor: | Syed Mubeen, Hongtao Ding, Wuji Huang, Alan Rassoolkhani, Jonathan Koonce, Scott K. Shaw, Austin McKee, Avik Samanta, Joseph Gomes, Jacob Fields |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Laser ablation Metals and Alloys chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Electrocatalyst Electrochemistry 01 natural sciences Oxygen Catalysis Oxygen reduction 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Contact angle chemistry Chemical engineering Materials Chemistry Ceramics and Composites Wetting 0210 nano-technology Selectivity |
| Zdroj: | Chemical Communications. 57:8003-8006 |
| ISSN: | 1364-548X 1359-7345 |
| DOI: | 10.1039/d1cc01438b |
| Popis: | Surface wettability plays an important role in heterogeneous electrocatalysis. Here we report a facile laser ablation strategy to directly modify the wettability of the silver catalyst surface and investigate its effect on oxygen reduction reaction (ORR). A broad range tuning of 2e−/4e− ORR pathways was achieved, with hydrophilic silver surfaces (contact angle (θw) 31.1° ± 0.6°) showing high activity and selectivity towards 4e− reduction of oxygen to water. |
| Databáze: | OpenAIRE |
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