Tuning the Polarity of Dinitrile-Based Electrolyte Solutions for CO2 Electroreduction on Copper Catalysts

The development of carbon dioxide electrochemical reduction (CO2ER) has mainly focused on aqueous electrolytes. However, the low solubility of apolar CO2 in polar water negatively impacts the electrochemical process, especially mass transport. Organic-based electrolytes, such as methanol, acetonitrile, and dimethylformamide, have been explored as an alternative due to increased CO2 solubility. Yet, insights into other organic electrolytes are …