Jihyun Park and colleagues publish in ACS Catalysis, “Ionomer Side Chains Modulate Interfacial Microenvironments for Selective CO2 Electrolysis.” We demonstrate how imidazolium ionomers with varied linear alkyl side chains reshape catalyst–electrolyte interfaces to suppress hydrogen evolution and enhance CO2 electrolysis performance, linking side-chain structure to activity and selectivity in electrocatalytic systems.
