Surface charge as activity descriptors for electrochemical CO₂ reduction to multi-carbon products on organic-functionalised Cu.

ABSTRACT: Intensive research in electrochemical CO₂ reduction reaction has resulted in the discovery of numerous high-performance catalysts selective to multi-carbon products, with most of these catalysts still being purely transition metal based. Herein, we present high and stable multi-carbon products selectivity of up to 76.6% across a wide potential range of 1 V on histidine-functionalised Cu. In-situ Raman and density functional theory calculations revealed alternative reaction pathways that involve direct interactions between adsorbed histidine and CO₂ reduction intermediates at more cathodic potentials. Strikingly, we found that the yield of multi-carbon products is closely correlated to the surface charge on the catalyst surface, quantified by a pulsed voltammetry-based

SUBMITTER: Lim CYJ 

PROVIDER: S-EPMC9860078 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature