Small, Год журнала: 2025, Номер unknown
Опубликована: Май 12, 2025
Abstract The oxygen evolution reaction (OER) is integral to electrochemical energy systems; however, its intrinsic sluggish kinetics necessitate the design of high‐performance electrocatalysts minimize overpotential, enhance durability, and optimize efficiency. Significant efforts have been dedicated developing OER catalysts based on earth‐abundant transition‐metal complexes. Here, efficacy a tetranuclear cubane‐cored Ni(II) complex, [Ni₄(LH)₄(MeOH)]·CHCl₃ ( 1 ), in demonstrated. complex synthesized using tetradentate Schiff‐base ligand, [2‐{( E )‐(2‐hydroxyphenylimino)methyl)‐6‐(hydroxymethyl)‐4‐methylphenol}], characterized by single‐crystal X‐ray diffraction. redox properties are evaluated cyclic voltammetry solid state, which emphasize quasireversible oxidation state metal center. immobilized activated carbon cloth CC referred as CC‐1 , demonstrates efficient catalysis, subsequently activating form Ni(O)OH catalyst. postreaction analysis including UV–vis, FTIR, scanning electron microscopy–energy‐dispersive spectroscopy, photoelectron spectroscopy confirm stability molecular . results demonstrate catalysis with low overpotential 330 mV versus reversible hydrogen electrode Tafel slope 64 dec −1 confirming an effective catalyst alkaline medium deep understanding core mechanisms.
Язык: Английский
