Fig. 5: Mechanism analyses of accelerated HER kinetics. | Nature Communications

Fig. 5: Mechanism analyses of accelerated HER kinetics.

From: Accelerated water activation and stabilized metal-organic framework via constructing triangular active-regions for ampere-level current density hydrogen production

Fig. 5

a Overpotentials at 0.5 A cm−2 for S-NiBDC samples with different S doping amounts. b Polarization curves of S-NiBDC before and after soaking in 0.1 mM Zn(NO3)2 solution and H2O. c, d In-situ ATR-FTIR spectra of S-NiBDC and NiBDC with the potential of 0 to −0.4 V vs. RHE. e, f Polarization curves of S-NiBDC and NiBDC in 1.0 M NaOH H2O solution and 1.0 M NaOD D2O solution. The insets are the KIE values vs. overpotential.

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