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 (θ) 31.1°± 0.6°) showing high activity and selectivity towards 4e reduction of oxygen to water.
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| http://dx.doi.org/10.1039/d1cc01438b | DOI Listing |
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