“…First, the further increase of the current density while maintaining C 2 H 4 selectivity above 85% is necessary to enhance the economic viability and maximize the potential of this technology. Second, most of the reported data are derived from three-electrode measurement systems, which differ from real reactor devices. , Real devices typically employ zero-gap membrane electrode assemblies (MEAs) with polymer electrolytes, offering reduced cell voltage and improved energy efficiency. , In contrast, the three-electrode systems utilize a liquid electrolyte layer with a thickness on the order of centimeters between the electrode and membrane . Moreover, the interface reaction environment, including local pH and interfacial cation concentration, may vary between high-concentration alkaline KOH solutions used in three-electrode studies and polymer electrolyte systems. , These differences can impact EASH performance, and the results observed under three-electrode conditions may not fully reflect the behavior in real devices.…”