ZIF-67-derived Co, Ni and S co-doped N-enriched porous carbon polyhedron as an efficient electrocatalyst for oxygen evolution reaction (OER)

Synthesis of FeNiCo Ternary Hydroxides through Green Grinding Method with Metal‐Organic Frameworks as Precursors for Oxygen Evolution Reaction

“…The overpotentials of different prepared electrodes at 10 and 50 mA cm −2 and corresponding Tafel slopes are contrasted in Figure 3c. It illustrates that G‐FeNi‐Co‐ZIF‐L/NF shows the lowest overpotential of 248 mV at 10 mA cm −2 and the smallest Tafel slope of 49.5 mV dec −1 compared with G‐Fe‐Co‐ZIF‐L/NF (307 mV, 49.6 mV dec −1 ), G‐Ni‐Co‐ZIF‐L/NF (312 mV, 76.8 mV⋅dec −1 ), Co‐ZIF‐L/NF (292 mV, 90.0 mV dec −1 ), RuO 2 /NF (310 mV, 57.8 mV dec −1 ) and NF (411 mV, 135.7 mV dec −1 ), which is also comparable to those of other reported ZIF‐derived electrocatalysts (Figure 3d and Table S1) [40–49] . These results confirm the synergistic effect of the Fe/Ni/Co tri‐metallic material, which can greatly improve the catalytic activity of electrocatalyst towards OER.…”

Critical Review, Recent Updates on Zeolitic Imidazolate Framework‐67 (ZIF‐67) and Its Derivatives for Electrochemical Water Splitting

“…[152][153][154][155][156] After realizing the impact of N doping, other do-pants such as S, P, and B to modulate the electronic structure of the carbon matrix were explored by researchers. [157][158][159] For example, metallic Co, CoS, and P co-doped N enriched carbon (CoSP/NC) electrocatalysts were fabricated using pyrolysis, sulfurization, and phosphorization technique and tested for HER. This work strongly claims that the co-existence of S and P elements in electrocatalyst had a great influence on the HER performance.…”

“…They explained high activity attributed to the efficient utilization of NiS 2 , NiCo 2 S 4 , and N-enriched porous carbon. [158] Heterostructure modulates the structural interaction and the charge transfer during the OER process to deliver high catalytic activity as compared to its single-phase counterpart. For example, core-shell Co 3 S 4 @MoS 2 heterostructure (Co 3 S 4 polyhedron as core and MoS 2 as NSs) with unique hollow structure requires a low overpotential of 330 mV to reach 10 mA cm −2 as compared to Co 3 S 4 (360 mV) in 1 m KOH solution.…”

Embedded ionic liquid modified ZIF-8 in CaMgAl hydrotalcites for bio-glycerol transesterification

“…Metal organic framework materials (MOFs) are coordination polymers with three-dimensional pore structures. 18 Metal ions in MOFs usually serve as connection points and organic ligands support the spatial extension. MOFs have become a prominent research direction in many chemical embranchment subjects as another important novel porous material besides zeolites and carbon nanotubes.…”