Cooperative Effects Associated with High Electrolyte Concentrations in Driving the Conversion of CO2 to C2H4 on Copper
Shaoyang Lin,
Yuval Fishler,
Soonho Kwon
et al.
Abstract:Increasing the product selectivity and decreasing the cost of product separation is critical for large scale application of electrochemical CO2 reduction (ECO2R). We hypothesize that highly concentrated aqueous electrolytes can tune the microenvironment of the catalyst/electrolyte interface and improve product selectivity. Compared to a conventional electrolyte concentration of 1 M HCOOK, the use of a 7.1 M HCOOK electrolyte increases the FE ratio of C2H4/CO from 2.2 ± 0.3 to 18.3 ± 4.8 at -1.08 V vs RHE on a … Show more
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