Construction of interfacial engineering on CoP nanowire arrays with CoFe-LDH nanosheets for enhanced oxygen evolution reaction

Structural and Interfacial Engineering of Ni2P/Fe3O4 Porous Nanosheet Arrays for Efficient Oxygen Evolution Reaction

“…The OER activities of 3-Ni 2 P/Fe 3 O 4 /NF and the corresponding counter samples were explored by linear sweep voltammetry (LSV) using a standard three-electrode system with a scan rate of 2 mV s –1 in 1.0 M KOH. All initial data were corrected by the ohmic potential drop ( iR ) loss caused by solution resistance . In Figure a,b, the 3-Ni 2 P/Fe 3 O 4 /NF exhibits the best OER performance with a low overpotential of 214 mV at 60 mA cm –2 , which is lower than those of 1-Ni 2 P/Fe 3 O 4 /NF, 2-Ni 2 P/Fe 3 O 4 /NF, and RuO 2 /NF and near the other Ni-/Fe-based OER catalysts (Table S1).…”

“…All initial data were corrected by the ohmic potential drop (iR) loss caused by solution resistance. 41 In Figure 3a,b, the 3-Ni 2 P/Fe 3 O 4 /NF exhibits the best OER performance with a low overpotential of 214 mV at 60 mA cm −2 , which is lower than those of 1-Ni 2 P/Fe 3 O 4 /NF, 2-Ni 2 P/Fe 3 O 4 /NF, and RuO 2 /NF and near the other Ni-/Fe-based OER catalysts (Table S1). With the further increase of the NaH 2 PO 2 content, the OER performance of the catalyst has no further improvement (Figure S5b).…”

Bi‐Functional Fe3O4/Au/CoFe‐LDH Sandwich‐Structured Electrocatalyst for Asymmetrical Electrolyzer with Low Operation Voltage

“…Five peaks are deconvoluted with the binding energy of 710.6, 713.2, 716.9, 724.5, and 726.8 eV, which can be assigned to the 2p 3/2 and 2p 1/2 spin orbits of Fe 2+ and Fe 3+ , as well as Fe Sat., respectively. [ 26,35 ] Furthermore, two peaks at 84.0 and 87.6 eV can be observed in the Au high revolution spectra (Figure 3d), which are corresponded to the 4f 7/2 and 4f 5/2 spin orbits, respectively. The location of the representative peaks and the 3.6 eV peak‐to‐peak separation indicate that the valence of Au is zero.…”

A comprehensive review on the electrochemical parameters and recent material development of electrochemical water splitting electrocatalysts

“…210 mV. 228 3D core-shell CoP@CoFe-LDH/NF heterostructures exhibited enhanced the OER performance with small Tafel slope value of 69.2 mV dec −1 and high TOF value of 0.093 s −1 at 300 mV and durability of 20 h. 230 The nanosheets are interconnected improving the number of active sites doping of TMP with noble metals have signicantly bettered the activity and reduced the entire reliance on precious metals. Only 3.85 wt% ruthenium doped Ni 5 P 4 synthesised via impregnation of Ru 3+ into Ni(OH) 2 followed by phosphidation as HER electrocatalyst with Tafel slope of 52 mV dec −1 and overpotential of 54 mV at −10 mA cm −2 with excellent durability of 120 h. 231 The most recent work involves doping of Ru onto NiCoP inducing numerous Ni and Co vacancies leading to abundant number of active sites and increased conductivity aer electrochemical activation.…”