Fig. 4: Energy-dispersive X-ray spectroscopy.
From: A scalable method for preparing Cu electrocatalysts that convert CO2 into C2+ products
a–d Raw data of atomic composition of electropolished Cu foil and halogenated Cu foils as measured by EDS. e–h Compositions of molecular species from converted EDS data. ‘As-prep.’ indicates the as-prepared catalyst by electropolishing or anodic halogenation. ‘Imm.’ indicates the catalyst underwent oxide formation by immersion in air-saturated 0.1 M KHCO3 electrolyte for 10 min. ‘Reduced’ indicates the catalyst was reduced in CO2-saturated 0.1 M KHCO3 electrolyte by LSV from its corresponding OCP to −1.8 V vs Ag/AgCl at a scan rate of 5 mV/s. Source data are provided as a Source data file.
