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Phys.org

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Dynamic surface reconstruction explains how copper sulfide catalysts tune CO

Copper sulfide (CuS) catalysts continuously reconstruct their surface during electrochemical CO2 reduction, reports a study from the Institute of Science Tokyo, Japan. By uncovering the mechanism behind the dynamic surface changes that occur during potential-step electrolysis, the researchers revealed how sulfur and oxygen play distinct roles in catalyst activity and product selectivity, paving the way for improved CO2 conversion technologies.

18 Aug 2026 8:50 pm