Fig. 4: Alkaline HER performance.
From: Biaxial strain induced OH engineer for accelerating alkaline hydrogen evolution
a HER polarization curves of F-MoSe2, U-MoSe2, B-MoSe2, and 20 wt% Pt/C. The potential is corrected by an automatic 90% of iR compensation. b Comparison of overpotentials at 10 and 100 mA cm−2, c Tafel plots, (d) half of current density differences (Ja-Jc) plotted against scan rates, and (e) Nyquist plot of electrochemical impedance spectra. charge-transfer resistance (Rct) of the B-MoSe2, U-MoSe2, and F-MoSe2electrode was measured to be 11.6, 30.5, and 45.2 Ω. f LSV curves in CO-saturated 1 M KOH. g Chronopotentiometric test at two current densities. h Durability test of the MEA electrolyser at the current density of 1 A cm−2. The insets in (h) are scheme of MEA electrolyser (left) and LSV curves operated at 25 and 60 °C (right).
