Unveiling the active sites of Ni–Fe phosphide/metaphosphate for efficient oxygen evolution under alkaline conditions

Abstract

The highly active and stable oxygen evolution reaction (OER) performance of Ni–Fe phosphide/metaphosphate (Ni1−xFex-P/PO3) can originate from in situ generated Fe doped γ-NiOOH.

Unveiling the Origin of the High Catalytic Activity of Ultrathin 1T/2H MoSe2 Nanosheets for the Hydrogen Evolution Reaction: A Combined Experimental and Theoretical Study

“…[1][2][3][4][5][6] However,t he benchmark hydrogen evolution reaction( HER) suffers from sluggish reactionk inetics owing to additional water dissociation.M any efforts have been devoted to exploring different catalytic systems and the synthesis of high-performance catalysts for improvingt he HER. 2H 2 + O 2 )i se nvisioned to satisfy the globald emandf or clean and renewable energy,a ttracting significant attentionb ecause of its potential to replace fossil fuels.…”

“…2H 2 + O 2 )i se nvisioned to satisfy the globald emandf or clean and renewable energy,a ttracting significant attentionb ecause of its potential to replace fossil fuels. [1][2][3][4][5][6] However,t he benchmark hydrogen evolution reaction( HER) suffers from sluggish reactionk inetics owing to additional water dissociation.M any efforts have been devoted to exploring different catalytic systems and the synthesis of high-performance catalysts for improvingt he HER. [7][8][9][10] Notably,t he use of transition metal dichalcogenides has been intensively investigated by Rao and co-workers.…”

Electrochemical Synergies of Heterostructured Fe₂O₃-MnO Redox Couple for Oxygen Evolution Reaction in Alkaline Water Splitting

“…As the number of CV scans increased, the oxidation and reduction peaks of the Ni foil were shifted to a positive voltage. In general, it has been reported that the oxidation-reduction peak shifts to a positive voltage value until a stable phase is obtained on the surface of the NF in the OER and that it takes approximately 100 cycles for the peaks to stabilize [17]. However, no potential change was observed in the MnO/NF, Fe2O3/NF, and Fe2O3-MnO/NF electrodes assembled here, despite cycling.…”

Current Status of Self‐Supported Catalysts for Robust and Efficient Water Splitting for Commercial Electrolyzer

“…Qiao's group reports the free‐standing single crystalline structure is advantageous for designing robust OER electrocatalyst due to their rigid and defect free structure . Vertically aligned NiFe Hydroxide grown on nickel foam via a facile hydrothermal method was tested in 1 M KOH at different current density of 10, 50 and 100 mA cm −2 achieving an overpotential of 267, 276 and 288 mV, respectively.…”