As demonstrated in the litterature, tetrataenite is a favorable materials coming from a mineral meteorite, NiFe is his chemical composition. First, in 1988 Wasilewski, P did a characterization of the magnetic mineral tetrataenite and its distinction with isochemical taenite. So, it is described that taenite with [48-57] % of nickel is magnetically soft, however when changed through atomic ordering below 320 °C it becomes the novel magnetic mineral tetrataenite along with appreciable magnetic hardness and other singular magnetic properties. Also, it noted that tetrataenite is omnipresent in chondrite meteorites, happen as discrete grain, as a distinct taenite rim, and in the etched nebulous zone. So, here Haikal,R.R., et al, reported an approach to synthesized hybrid ultramicroporous material (HUM) precursor to graphene-embbeded tetrataenite as superb highly active and durable non-precious group (NPG) metals for the electrocatalytic oxygen evolution reaction (OER). Indeed, the authors well demonstrated the improvement in the properties of the designed materials. So, after Raman spectroscopy analysis, it was founded that the ratio (ID/IG) is about 1.562 of the graphitic carbon in the designed materials while normally the unmodified graphene or ordered graphite has (ID/IG) ratio of around [1-1.2]. thus this indicate a higher degree of disorder in the synthesized catalyst. In fact, the elaborated materials (NiFe@G) shows outstanding properties for the oxygen evolution reaction (OER), such as overpotential (0.21 V vs RHE), low OER onset potential (1.44 V vs RHE and a reduced overpotential at 10 mA/cm 2 (ƞ10 = 266 mV). The electrochemical characterization of the evaluated materials in 1.0 M KOH media are shown in Fig. , which shows a huge different in the considered materials with greater performance of NiFe@G for the OER. Also, the X-Ray photoelectrons Spectroscopy analysis of NiFe@G revealed the well incorporation of all considered elements in the catalyst structure as fully shown in the Fig. . Moreover, both atomic force microscopy (AFM) and transmission electron microscopy (TEM) were considered, the TEM analysis exhibits that there is a continuous and homogenous coatings of graphene (G) with the alloy (NiFe). It seems as plates of the NiFe deposited on the graphene surface. Recently, Wu, H., et al studied an amorphous Fex(NiCu)3-x-MOFs and proposed it as a potential candidate catalyst for the OER in alkaline media. So, the optimal ternary FeNiCu-MOF exhibited higher current density of 10 mA/cm 2 merely at low overpotential as low as 260 mV with a Tafel slope of 61 mV/dec along with superior durability over 24 h. In particular, it is suggested that DFT calculation proved that the iron (Fe) sites are the active sites for the OER in the the optimal proposed catalyst. This material (FeNiCu-MOF) surpass the material proposed by Haikal and his colleague by -6 mV in terms of overpotential. This might become to the copper contributions and as well as the MOF structure. This shows that the synergistic effect between catalysts' constituent is more interesting in material sciences and engineering technologies. 2 showing the stability of the NiFe@G catalyst in 1 M KOH at a 100 mV/s for CVs and 10 mV/s for the LSVs, Reprinted with permission from copyright @ 2024, Royal Society of Chemistry.