fig5

From: Microwave-pulse assisted synthesis of tunable ternary-doped 2D molybdenum carbide for efficient hydrogen evolution

Figure 5. Synthesis of doped 2D Mo₂C in 0.5 M H₂SO₄ electrocatalytic HER by microwave pulse method. (A) Schematic diagram of HER reaction for rapid electron and ion transport 2D P,N,S-Mo₂C nanosheets; (B) Polarization curve; (C) Overpotentials at 10 mA·cm^-2; (D) The corresponding Tafel slope; (E) Plotting current density variation against scan rate to fit linear regression allows for the estimation of C_dl; (F) Mass activity of various spinels calculated at -0.1 V vs. RHE; (G) Summary of statistical electrochemical properties; (H) Chronopotentiometry test at the current density of 10 mA·cm^-1; (I) The accelerated durability tests of 2D P,N,S-Mo₂C. 2D: Two-dimensional; Mo₂C: molybdenum carbides; HER: hydrogen evolution reaction; RHE: reversible hydrogen electrode.