Fe–Ni–Co trimetallic oxide hierarchical nanospheres as high-performance bifunctional electrocatalysts for water electrolysis

Abstract

Fe–Ni–Co spheres were used as bifunctional catalysts exhibit high total water decomposition activity. Only a cell voltage of 1.61 V was required to attain a current density of 10 mA cm−2.

Cobalt incorporation and MoS2–NiS2 heterostructure synergistic for improving full water electrolysis efficiency

“…The TOF (turnover frequencies) values of catalysts are calculated to study the intrinsic alkaline HER performance. 27,46 As shown in Fig. S10 (ESI†), under the overpotential of 350 mV, the TOF value of Co–MoS 2 /NiS 2 /CP was 1.47 S −1 , which was higher than MoS 2 /NiS 2 /CP (0.91 S −1 ) and NiS 2 /CP (0.62 S −1 ), and also comparable to the reported HER catalysts (Table S1, ESI†).…”

Self-supporting FeCoMoP nanosheets for efficient overall water splitting

“…7(e), the water splitting performance of Fe-CoMoP/NF is compared with those of other electrocatalysts at 10 mA cm À2 , and Fe-CoMoP/NF maintains a significant advantage. 23,39,[52][53][54][55][56][57][58][59][60][61][62][63][64] The surface morphology of the Fe-CoMoP/NF catalyst after stability testing was studied using SEM. As shown in Fig.…”

“…18,19 Recently, researchers have shown a preference for nonprecious transition metals due to their affordable prices and excellent catalytic properties. [20][21][22] Transition metal-based oxides, 23,24 hydroxides, [25][26][27][28] sulfides, [29][30][31] phosphides, [32][33][34] nitrides 35,36 and borides 37,38 were found to be good electrocatalysts for water splitting. Transition metal phosphides (TMPs) are highly conductive, stable, and catalytically active, which has greatly piqued the interest of researchers.…”

Synthesis of a multi-functionalized NiCo2O4 spinel heterostructure via the hydrothermal route for high-performance photo-electrocatalytic, anti-bacterial and eco-toxicity applications

“…rGO-Co 3 Ni1B displayed superior OER activity with a low overpotential of 318 mV and was stable for up to 16 h. 10 Zheng et al reported that Fe–Ni–Co trimetallic oxide is efficient for the OER with an overpotential of 204 mV in an alkaline medium. 11 Nickel cobaltites have been employed for the fabrication of energy storage devices due to high electrochemical activities, electrical conductivity, large specific capacitance, low optical band gap energy, rich electroactive sites and excellent energy densities. During an electrochemical reaction, the M 2+ /M 3+ redox pair (M – Ni or Co) acts as numerous pseudo-capacitance active centres.…”