fig7
Figure 7. (A) Cross-sectional SEM images of Zirfon. Cross-sectional SEM images of composite membrane of different particle sizes of CeO2 (B) 10 nm, (C) 50 nm, (D) 100 nm[85]. Polarization curves (E) Z80C5 in 10 wt% KOH (F) Z80C5 in 30 wt% KOH. Nyquist impedance plots (G) Z80C5 in 10 wt% KOH (H) Z78C7 in 30 wt% KOH. Catalysts: Raney Ni/NiFe-LDH (nickel-iron layered double hydroxide)[93]. The sample named Z80C5 indicates the separator composed of 80 wt% ZrO2 and 5 wt% CNCs. The Raney Ni and NiFe-LDH are both commonly used electrode catalyst materials in alkaline water electrolysis.
