High-rate and selective conversion of CO₂ from aqueous solutions to hydrocarbons.

ABSTRACT: Electrochemical carbon dioxide (CO₂) conversion to hydrocarbon fuels, such as methane (CH₄), offers a promising solution for the long-term and large-scale storage of renewable electricity. To enable this technology, CO₂-to-CH₄ conversion must achieve high selectivity and energy efficiency at high currents. Here, we report an electrochemical conversion system that features proton-bicarbonate-CO₂ mass transport management coupled with an in-situ copper (Cu) activation strategy to achieve high CH₄ selectivity at high currents. We find that open matrix Cu electrodes sustain sufficient local CO₂ concentration by combining both dissolved CO₂ and in-situ generated CO₂ from the bicarbonate. In-situ C

SUBMITTER: Obasanjo CA 

PROVIDER: S-EPMC10235047 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature