Effect of the valence state of initial iron source on oxygen evolution activity of Fe-doped Ni-MOF

Evolution of metal organic frameworks as electrocatalysts for water oxidation

“…89 Interestingly, they discovered that the initial source of iron metal used for doping the Ni-MOF seemed to affect the catalytic performance of the MOF catalyst. 90 A similar conclusion was also reached by Zhang et al in their recent work, where they reported a series of Fe doped Ni-MOFs employing different Fe ion sources. In another work by Wan et al, morphologydependent catalytic activity of a MOF was observed, where a 3D-flower like structure was formed out of MOF nanosheeets.…”

MOF-Derived Fe-Doped Ni@NC Hierarchical Hollow Microspheres as an Efficient Electrocatalyst for Alkaline Oxygen Evolution Reaction

“…It reveals the very fast OER kinetics on Fe (5%)-Ni@NC. Compared with the recently reported similar electrocatalysts (Figure c), Fe(5%)-Ni@NC also exhibits comparable and even better OER performance under alkaline conditions. − In addition, the electrochemical impedance spectroscopy (EIS) data (Figure d) show that Fe(5%)-Ni@NC possesses a smaller radius of the semicircle than Ni@NC, implying that Fe(5%)-Ni@NC has a lower charge transfer resistance and thus faster OER kinetics …”

Anchoring Ce-modified Ni(OH)2nanoparticles on Ni-MOF nanosheets to enhances the oxygen evolution performance

“…9–12 Relying on its own advantages, researchers modified Ni-MOFs by a variety of strategies to optimize the OER performance, such as designing the ultra-thin MOF nanosheet structure, 13,14 introducing heterogeneous atoms, and constructing heterostructures. 15–18 Therein, heterostructures can increase the contact interface/surface and enhance charge transfer, leading to improved OER activities, 19 such as MnCo 2 O 4 /CeO 2 , 20 CeO 2 –CoS 1.97 , 21 and CoP/CeO x . 22…”