Clean and Reproducible Voltammetry of Copper Single Crystals with Prominent Facet-Specific Features Using Induction Annealing

Although copper is widely used as an electrocatalyst for the CO 2 reduction reaction, often little emphasis placed on identifying exactly facet distribution of surface. Furthermore, because differing surface preparation methodologies, reported characaterization voltammograms (where applicable) vary significantly between laboratories, even surfaces supposedly same orientation. In this work, we describe a methodology involving combination induction annealing and well-documented electrochemical steps, by which reproducible voltammetry different orientations can be obtained. Specifically, investigated three principal orientations: {111}, {100} {110}, representative polycrystalline We compared these to in literature prepared via either electropolishing or UHV-standard where find yield improvements quality with respect electropolished surfaces, though not quite good those obtained UHV-preparation.