Construction of Fe-doped CoP with hybrid nanostructures as a bifunctional catalyst for overall water splitting

Abstract

Owing to the ionic doping and the partial phosphating strategies, Fe0.25-CoP catalyst exhibited remarkable catalytic activity and durability for electrochemical water splitting.

FeP-CoP Nanocubes In Situ Grown on Ti3C2Tx MXene as Efficient Electrocatalysts for the Oxygen Evolution Reaction

“…While the second one at 710.40 and 723.90 eV corresponds to Fe 3+ 2p 3/2 and 2p 1/2 , which results from the inevitable surface oxidation of Fe in the air. , Analogously, the high-resolution spectra of Co 2p reveal three doublets (Figure b). The peaks at 778.36 and 793.26 eV are assigned to the Co 2+ 2p 3/2 and 2p 1/2 of Co–P bonds, and the peaks with binding energies of 781.57 and 797.57 eV are attributed to the oxidized Co 3+ species owing to the surface oxidation. , Notably, compared with the FeP-CoP, both the doublets belonging to Fe–P and Co–P of the FeP-CoP/Ti 3 C 2 T x -5 shift negatively, suggesting the strong coupling interaction between FeP-CoP and Ti 3 C 2 T x MXene. , Meanwhile, the peaks indexed to oxide species of Fe and Co become more obvious for FeP-CoP/Ti 3 C 2 T x -5, owing to the surface oxidation of phosphides with a smaller size. The formation of phosphides is supported by the peaks at 129.35 and 130.28 eV belonging to the metal phosphides (P–M) in the P 2p spectra (Figure c) .…”

Bio-inspired design of NiFeP nanoparticles embedded in (N,P) co-doped carbon for boosting overall water splitting

“…1,2 Highly efficient and low-cost catalysts for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are therefore greatly pursued. [3][4][5][6][7][8][9][10] Transition metal phosphides (TMPs), especially multi-TMPs, have been widely considered as promising candidates due to the improved electrical conductivity by P atoms and the adsorption activity of the active center for key species by the synergistic effect of different metals. [11][12][13][14][15][16] However, the lower electrical conductivity derived from less conductive support could induce the unsatisfactory HER and OER performances.…”

Ultrafine Ruthenium-Embedded P-Doped Carbon Materials as Bifunctional Catalysts for Solar-Assistant Water Splitting

“…Hydrogen (H 2 ) plays a crucial role in the future sustainable energy. − However, most H 2 is obtained by conventional hydrogen production via the steam reforming process, which would provoke the large-scale use of fossil fuels and aggravate greenhouse gas emissions. , Accordingly, overall water splitting powered by renewable energy has been considered a significant technology for the production of clear H 2 . − Recently, a promising strategy to resolve the insufficient conversion efficiency and sluggish catalytic kinetics of electrode materials for water splitting is to develop advanced electrodes with appropriate structures and highly active electrocatalysts. Until now, Pt-based materials, owing to their appropriate H* adsorption energy, have received significant attention as hydrogen evolution reaction (HER) electrocatalysts. − However, the large-scale application of Pt-based electrocatalysts is hindered by the exorbitant price and scarcity. Thus, developing novel materials, which served as substitutes for Pt-based catalysts, would be considered a promising strategy to accomplish potential clean-energy technologies. − Ru-based electrocatalysts, owing to their significant potential in HER and low cost equal to only 4% Pt, have been potential alternatives for replacing Pt-based electrodes. − However, the poor chemical stability of metallic Ru for its high dissolution rate in acidic and alkaline solutions needs to be resolved for further application …”