Fig. 3: CNx and VN: NRR vs. decomposition.
From: Identification and elimination of false positives in electrochemical nitrogen reduction studies

NH3 formation during the electroreduction of a CNx- and b VN-modified electrodes previously reported in the literature (entries 35 and 43 in Supplementary Table 1), and as measured in our laboratory at different stages of a continuous test. Electrolyte solutions and potentials (vs. reversible hydrogen electrode) used in tests are provided in corresponding panels; further experimental details can be found in Supplementary Figs. 1 and 2 and ref. 25 (CVA = cyclic voltammetry, CA = chronoamperometry).