Fig. 2: Electrocatalytic performance and characterization.
From: Electrochemical coupling of carbon monoxide and amine on iodide coordination stabilized Cuδ+ site
a The linear sweep voltammetry (LSV) curves of Cu2O NCs catalyst during ECRR in 0.1 M K2SO4 and 1 M DMA containing various halide ions (KCl, KBr and KI) with the scan rate of 50 mV s-1. The potential value is non-iR corrected. b FE of products distribution on Cu2O electrodes in the electrolyte of 0.1 M K2SO4, 1 M DMA, and 20 mM KI at the current density from 100 mA·cm−2 to 500 mA·cm−2 under CO flow. The flow rate of CO gas is 20 mL·min−1. c The influence of the KI and DMA on the product FE. d Selectivity of products on Cu2O electrodes in the electrolyte of 0.1 M K2SO4, 1 M DMA, and 20 mM KI at the current density from 100 mA·cm−2 to 500 mA·cm-2 under CO flow. e PR of DMAC for Cu2O electrodes without or with KX (X = Cl, Br and I) from 100 mA·cm-2 to 500 mA·cm−2 in the electrolyte of 0.1 M K2SO4 and 1 M DMA under CO flow. f The impact of different FEs and current densities on the profit of DMAC electrosynthesis and the profits by using Cu2O NCs catalyst without or with KI. g Demonstration of 80-hour stability in the electrolyte of 0.1 M K2SO4, 1 M DMA, and 20 mM KI at the current density of 400 mA·cm−2 under CO flow. Error bars represent the standard deviation of three independent samples. Data are presented as mean values ± standard deviation. Source data for Fig. 2a–g are provided as a Source Data file.
