Gold-in-copper at low *CO coverage enables efficient electromethanation of CO₂.

ABSTRACT: The renewable-electricity-powered CO₂ electroreduction reaction provides a promising means to store intermittent renewable energy in the form of valuable chemicals and dispatchable fuels. Renewable methane produced using CO₂ electroreduction attracts interest due to the established global distribution network; however, present-day efficiencies and activities remain below those required for practical application. Here we exploit the fact that the suppression of *CO dimerization and hydrogen evolution promotes methane selectivity: we reason that the introduction of Au in Cu favors *CO protonation vs. C-C coupling under low *CO coverage and weakens the *H adsorption energy of the surface, leading to a reduction in hydrogen evolution. We construct experimentally a suite o

SUBMITTER: Wang X 

PROVIDER: S-EPMC8184940 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature