fig6

Figure 6. Synthesis of doped 2D Mo₂C in 1 M KOH electrocatalytic HER by microwave pulse method. (A) Polarization curve; (B) The corresponding Tafel slope; (C) Plotting current density variation against scan rate to fit linear regression allows for the estimation of C_dl; (D) Mass activity of various spinels calculated at -0.1 V vs. RHE; (E) Summary of statistical electrochemical properties; (F) Chronopotentiometry test at the current density of 10 mA·cm^-2; (G) The accelerated durability tests of 2D P,N,S-Mo₂C; (H) The 2D P,N,S-Mo₂C was compared with the overpotential and Tafel of other recently reported doped Mo₂C-based electrocatalysts. 2D: Two-dimensional; Mo₂C: molybdenum carbides; HER: hydrogen evolution reaction; RHE: reversible hydrogen electrode.