Direct observation of bicarbonate and water reduction on gold: understanding the potential dependent proton source during hydrogen evolution.

ABSTRACT: The electrochemical conversion of CO₂ represents a promising way to simultaneously reduce CO₂ emissions and store chemical energy. However, the competition between CO₂ reduction (CO₂R) and the H₂ evolution reaction (HER) hinders the efficient conversion of CO₂ in aqueous solution. In water, CO₂ is in dynamic equilibrium with H₂CO₃, HCO₃ ^-, and CO₃ ^2-. While CO₂ and its associated carbonate species represent carbon sources for CO₂R, recent studies by Koper and co-workers indicate that H₂CO₃ and HCO₃ ^- also act as proton sources during HER (J. Am. Chem. Soc. 2020, 142, 415

SUBMITTER: Deng GH 

PROVIDER: S-EPMC10155912 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature