fig4
Figure 4. (A) Experimental and fitted Nyquist responses of NF, ZIF-67 and Mn-ZIF-67 at 1.47 V vs. RHE; (B) non-Faradaic CV series for Mn-ZIF-67; (C) linear dependence of Δj/2 on scan rate used to extract Cdl; and (D) ECSA-normalized polarization profiles, with estimated ECSA values shown in the inset. ZIF-67: Zeolitic imidazolate framework-67; NF: nickel foam; RHE: reversible hydrogen electrode; ECSA: electrochemically active surface area; CV: cyclic voltammetry.
