fig2
Figure 2. Electrochemical measurements for all Fe-1T/MoS2 samples. (A) LSV measurements in 0.5 M H2SO4 solution; (B) Tafel slopes derived from LSV curves; (C) Fitting plots of Cdl from CV measurements for the EASA calculation; (D) The EIS in 0.5 M H2SO4 solution; (E) The stability measurements for the acidic and alkaline solution for sample S10; (F) 24 h stability measurement at a constant RHE potential of - 0.2 V (equal to 10 mA/cm2 current density in acidic (0.5 M H2SO4) and alkaline (1M KOH) solutions, respectively. LSV: Linear sweep voltammetry; RHE: Reversible hydrogen electrod; CV: Cyclic voltammetry; EASA: Electrochemically active surface area; EIS: Electrochemical impedance spectra.