Observation of metal-organic interphase in Cu-based electrochemical CO₂-to-ethanol conversion.

ABSTRACT: Interphases are critical in electrochemical systems, influencing performance by controlling ion transport and stability. This study explores a metal-organic interphase in the electrocatalytic reduction of CO₂ (CO₂RR) on Cu, extending the concept of interphases to CO₂ conversion. Investigating organic modifications on CuO_x, we discover metal-organic interphases over 10 nm thick in highly ethanol-selective systems, contrary to the expected monolayer adsorption. Using an automated platform, 1080 CO₂RR experiments with 180 molecular modifiers identify functional groups affecting selectivity for ethanol and multi-carbon (C₂₊) products. We find that these modifiers consistently produce metal-organic interphases on the Cu or CuO

SUBMITTER: Shen Y 

PROVIDER: S-EPMC11871064 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature