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Effect of silver electrode wetting state on oxygen reduction electrochemistry
Journal article   Peer reviewed

Effect of silver electrode wetting state on oxygen reduction electrochemistry

Austin McKee, Avik Samanta, Alan Rassoolkhani, Jonathan Koonce, Wuji Huang, Jacob Fields, Scott K Shaw, Joseph Gomes, Hongtao Ding and Syed Mubeen
Chemical communications (Cambridge, England), Vol.57(65), pp.8003-8006
08/12/2021
DOI: 10.1039/D1CC01438B
PMID: 34190248

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Abstract

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.

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