fig3

Figure 3. (A) Polarization curves at 1,600 rpm, (B) kinetic current density (J_k) at 0.85 V and E_1/2, (C) Tafel profile kinetics, (D) mass activity (MA) and turnover frequency (TOF), (E) electron transfer number and H₂O₂ yield of the Ax-Cl-Cu/NC and reference sample, (F) durability test plots (ADT) of Ax-Cl-Cu/NC in 0.1 M KOH solution.