Hierarchical nickle-iron layered double hydroxide composite electrocatalyst for efficient oxygen evolution reaction

Interface engineering of hierarchical P-doped NiSe/2H-MoSe2nanorod arrays for efficient hydrogen evolution

“…It is worth noting that the binding energies of Ni 2+ 2p exhibit a positive shift of about 0.3 eV after P substitution, indicating that P doping modulates the electronic structure of P-NiSe/MoSe 2 @NF, causing the electron density around the nickel atom to decrease. 34,35 In the Mo 3d spectra in Fig. 3b, the peaks at 229 and 232.2 eV correspond to the Mo 3d 5/2 and Mo 3d 3/2 of Mo 4+ , respectively, confirming the presence of 2H-MoSe 2 .…”

Dual Modification of Stainless Steel by Small Molecule Oxalic Acid for Oxygen Evolution Reaction

“…In Figure e, the high-resolution spectra of Fe 2p for OESSM and ESSM contain information on the two spin–orbit characteristic states of Fe 2p 1/2 and Fe 2p 3/2 . For OESSM, the binding energies located at 732.27 and 719.23 eV are the oscillatory satellite peaks of Fe 2p, the peaks located at 724.23 and 711.08 eV should belong to Fe 2+ , and, finally, the peaks at 727.54 and 714.74 eV should be attributed to Fe 3+ . In the Ni 2p high-resolution spectrum of OESSM (Figure f), the binding energies of the characteristic peaks for Ni 2+ are located at 871.81 and 855.54 eV, while those of the Ni 3+ are located at 874.85 and 856.73 eV, and the peaks appearing on the leftmost side of the 2p orbit are the corresponding oscillating satellite peaks .…”

Heterojunction of Metal Plasmas and CoO Nanofilms for Ultraefficient Activity to Oxygen Evolution Electrocatalysts

“…At present, the catalysts used for OER on the market are mainly RuO 2 or IrO 2 related compounds. , However, their high price, difficulty in mining, and scarcity of reserves all limit their large-scale applications . Transition-metal compounds are of interest due to their high efficiency, low cost, environmental friendliness, and unique physical and chemical properties for water splitting, while high-performance electrocatalysts are crucial for energy conversion devices. ,− Especially cobalt, nickel, iron, and molybdenum based materials have been comprehensively studied. − For example, Tong et al. cleverly prepared Co-doped Ni 3 S 2 nanocones by vulcanizing a cobalt oxide nanofilm on the porous nickel foam (NF); the electrode exhibits excellent catalytic reactions, reaching an overpotential of 297 mV at a current density of 20 mA cm –2 .…”

“…At present, the catalysts used for OER on the market are mainly RuO 2 or IrO 2 related compounds. , However, their high price, difficulty in mining, and scarcity of reserves all limit their large-scale applications . Transition-metal compounds are of interest due to their high efficiency, low cost, environmental friendliness, and unique physical and chemical properties for water splitting, while high-performance electrocatalysts are crucial for energy conversion devices. ,− Especially cobalt, nickel, iron, and molybdenum based materials have been comprehensively studied. − For example, Tong et al.…”