Fig. 4: Tandem reaction mechanism analysis of Co6Ni4 for NO3RR.
From: Revealing and modulating catalyst reconstruction for highly efficient electrosynthesis of ammonia
a LSV curves (without iR compensation) of NO3RR for Co, Co8Ni2, Co6Ni4, Co4Ni6, Co2Ni8, and Ni catalysts, which is red, purple, blue, orange, black and green, respectively. The shaded regions represent the error bars. b The FE of NH3 and NO2- for prepared catalysts at −0.276 V (without iR compensation). c The Cdl and Rct of synthesized catalysts, which is represented by blue histograms and red dots, respectively. d LSV-derived potentials and Tafel slopes for NO3RR, NO2RR using Co, Co6Ni4, Ni catalysts at the current density of 100 mA cm-2 (potentials are not iR-corrected). The error bar represents the standard deviation of the data from three independent experiments. e Adsorption energy of NO3- and NO2- on Co, Co6Ni4, and Ni catalysts. f The online DEMS spectra of Co6Ni4 under NO3RR condition. In situ ATR-FTIR spectra of (g) Co6Ni4, (h) Co, and (i) Ni catalysts measured under NO3RR condition (potentials are not iR-corrected). Source data for the above figures are provided as a Source Data file.
