Electroreduction of CO₂ to syngas with controllable H₂/CO ratios in a wide potential range over Ni–N co-doped ultrathin carbon nanosheets

Abstract

The conversion of CO2 to syngas (H2 and CO) via electrochemical reduction has been considered a promising strategy to mitigate the greenhouse effect. However, it is a great challenge to...

Size effect of nickel from nanoparticles to clusters to single atoms for electrochemical CO2 reduction

“…4c, the N 1s spectra may be deconvoluted into ve main species: corresponding to pyridine N (398.3 eV), metal-N (399.5 eV), pyrrolic N (400.6 eV), graphitic N (401.5 eV) and oxidized N (403.5 eV). [45][46][47][48] Notably, the content of Ni-N decreases with the increase of the Ni particle size. The results indicated that the number of Ni-N active sites can be adjusted by the regulation of the Ni particle size.…”