Local hydroxyl enhancement design of NiFe sulfide electrocatalyst toward efficient oxygen evolution reaction

Spindle Nanorods of CeO2 and NiS Heterointerface Coated by the NC Layer: A High-Performance Bifunctional Electrocatalyst for Water Splitting

“…Interestingly, by comparison of the XPS spectrum Ni 2p, it was found that the chemical state of the catalyst surface changed after testing. As shown in Figure S14, the original peaks of Ni 2+ and Ni 3+ disappeared after OER, and two new signal peaks appeared at 856.2 and 874.3 eV, indicating that NiOOH active material was formed on the surface of NC/NiS-CeO 2 . , The NiOOH species have excellent OER performance, and the NiOOH active species produced on the surface after the reaction bring excellent OER activity to the material. ,, Moreover, Figure S15 shows the morphology after the OER test; the spindle rods have been preserved.…”

Critical challenges and opportunities for the commercialization of alkaline electrolysis: high current density, stability, and safety

“…Liu et al reported N-doped carbon nanotubes (NCNT) as a conductive OH − concentration enhancement matrix. 93 NCNT is incorporated with Fe-NiS 2 catalyst to accelerate OER performance by promoting the mass transport process of OH − . OH adsorption energy ( E ads ) on the electropositive site of nitrogen-doped carbon (−1.48 eV) is higher than graphite carbon site (−1.22 eV), indicating the introduction of nitrogen-doping offers chemical active site facilitating the local attraction of OH − .…”

Regulating the Electronic Structure of Ni Sites in Ni(OH)2 by Ce Doping and Cu(OH)2 Coupling to Boost 5-Hydroxymethylfurfural Oxidation Performance

“…The atomic positions and lattice constants of catalysts were both fully relaxed until the maximum energy difference and residual force on atoms reached 10 −5 eV and 0.001 eV/Å, respectively. 50 The catalyst surface models were constructed, including bare Cu(OH) 2 (111), a NiOOH cluster supported on Cu(OH) 2 (111) surface (Cu(OH) 2 @NiOOH), and a Ce-doped NiOOH cluster supported on Cu(OH) 2 (111) surface (Cu(OH) 2 @Ce-NiOOH). Herein, Cu(OH) 2 is a (2 × 2) supercell with 240 atoms.…”