Enhancing CO₂ electroreduction to CH₄ over Cu nanoparticles supported on N-doped carbon.

ABSTRACT: The electroreduction of CO₂ to CH₄ has attracted extensive attention. However, it is still a challenge to achieve high current density and faradaic efficiency (FE) for producing CH₄ because the reaction involves eight electrons and four protons. In this work, we designed Cu nanoparticles supported on N-doped carbon (Cu-np/NC). It was found that the catalyst exhibited outstanding performance for the electroreduction of CO₂ to CH₄. The FE toward CH₄ could be as high as 73.4% with a high current density of 320 mA cm^-2. In addition, the mass activity could reach up to 6.4 A mg_Cu ^-1. Both experimental and theoretical calculations illustrated that the pyrrolic N in NC could accelerate the hydrogena

SUBMITTER: Wu Y 

PROVIDER: S-EPMC9297438 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature