Chem. Commun., 2026, Accepted Manuscript DOI: 10.1039/D6CC02197B, Review Article Yingqi Liu, Gyeongrok Jang, Jungwon Park Electrochemical CO2 and CO reduction reaction (CO(2)RR) has attracted growing interest for sustainable carbon conversion. Characterizing catalyst dynamics and reaction intermediates under operating conditions is important, but gas-electrolyte dynamics make...