Bicarbonate Electroreduction to Multicarbon Products Enabled by Cu/Ag Bilayer Electrodes and Tailored Microenviroments.

ABSTRACT: Bicarbonate electrolyzer can achieve the direct conversion of CO₂ capture solutions that bypasses energy-intensive steps of CO₂ regeneration and pressurization. However, only single-carbon chemicals (i. e., CO, formate, CH₄ ) were reported as the major products so far. Herein, bicarbonate conversion to multicarbon (C₂₊ ) products (i. e., acetate, ethylene, ethanol, propanol) was achieved on rationally designed Cu/Ag bilayer electrodes with bilayer cation- and anion-conducting ionomers. The in-situ generated CO₂ was first reduced to CO on the Ag layer, followed by its favorable further reduction to C₂₊ products on the Cu layer, benefiting from the locally high concentration of CO. Through optimizing the bilayer configurations

SUBMITTER: Lee J 

PROVIDER: S-EPMC9828181 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature