Morphological Stability of Copper Surfaces under Reducing Conditions.

ABSTRACT: Though copper is a capable electrocatalyst for the CO₂ reduction reaction (CO2RR), it rapidly deactivates to produce mostly hydrogen. A current hypothesis as to why this occurs is that potential-induced morphological restructuring takes place, leading to a redistribution of the facets at the interface resulting in a shift in the catalytic activity to favor the hydrogen evolution reaction over CO2RR. Here, we investigate the veracity of this hypothesis by studying the changes in the voltammetry of various copper surfaces, specifically the three principal orientations and a polycrystalline surface, after being subjected to strongly cathodic conditions. The basal planes were chosen as model catalysts, while polycrystalline copper was included as a means of investigating the overall

SUBMITTER: Raaijman SJ 

PROVIDER: S-EPMC8532114 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature