(a) Optical and (b-d) SEM images of NiCo LDH nanosheet arrays on NF [62
]. Copyright 2015, Elsevier Ltd. (e) SEM and (inset) corresponding TEM images of CCF LDH, (f) TEM image of CCF LDH at medium magnification, and (g) HRTEM image of CCF LDH showing the layered structure of CoFe LDH and (inset) structure model of CoFe LDH [36
]. Copyright 2017, Elsevier Ltd. (h) Schematic illustration of the synthetic route to MFe LDH (M = Co, Ni, or Li) nanoarrays, (i) photographs of MFe LDH nanoarrays growing on Ni foam before and after self-oxidation in air, (j) XRD patterns of MFe LDH, and (k) linear sweep voltammetry (LSV) curves and (l) overpotentials (at 10 and 100 mA cm-2
in 1 M KOH) of MFe LDH in comparison with the benchmark Ir/C electrocatalyst [69
]. Copyright 2015, the Royal Society of Chemistry.