Interrogation of Oxidative Pulsed Methods for the Stabilization of Copper Electrodes for CO₂ Electrolysis.

ABSTRACT: Using copper (Cu) as an electrocatalyst uniquely produces multicarbon products (C₂₊-products) during the CO₂ reduction reaction (CO2RR). However, the CO2RR stability of Cu is presently 3 orders of magnitude shorter than required for commercial operation. One means of substantially increasing Cu catalyst lifetimes is through periodic oxidative processes, such as cathodic-anodic pulsing. Despite 100-fold improvements, these oxidative methods only delay, but do not circumvent, degradation. Here, we provide an interrogation of chemical and electrochemical Cu oxidative processes to identify the mechanistic processes leading to stable CO2RR through electrochemical and in situ Raman spectroscopy measurements. We first examine chemical oxidation using an open-circuit p

SUBMITTER: Kok J 

PROVIDER: S-EPMC11258781 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature