Direct Electroreduction of Carbonate to Formate.

ABSTRACT: A cause of losses in energy and carbon conversion efficiencies during the electrochemical CO₂ reduction reaction (eCO₂RR) can be attributed to the formation of carbonates (CO₃^2-), which is generally considered to be an electrochemically inert species. Herein, using in situ Raman spectroscopy, liquid chromatography, ¹H nuclear magnetic resonance spectroscopy, ¹³C and deuterium isotope labeling, and density functional theory simulations, we show that carbonate intermediates are adsorbed on a copper electrode during eCO₂RR in KHCO₃ electrolyte from 0.2 to -1.0 V_RHE. These intermediates can be reduced to formate at -0.4 V_RHE and more negative potentials. This finding is supporte

SUBMITTER: Ma H 

PROVIDER: S-EPMC10655187 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature