Langmuir, Год журнала: 2025, Номер unknown
Опубликована: Май 21, 2025
Designing efficient and stable oxygen evolution reaction (OER) catalysts is of great significance for hydrogen production technology through the electrolysis water. Nickel sulfide (NixSy) has garnered considerable attention as an OER electrocatalyst owing to its high electrical conductivity distinctive structure. Herein, Ni3S4-Yb2O3 on nickel foam electrocatalysts was fabricated a hydrothermal synthesis approach optimize performance Ni3S4. The incorporation Yb2O3 induced charge redistribution within Ni3S4, expanded active surface area, enhanced availability sites. Consequently, Ni3S4-Yb2O3/NF catalyst demonstrates exceptional electrocatalytic in 1 M KOH, attaining current density 10 mA cm-2 at minimal overpotential 148 mV, along with ultralow Tafel slope 47.3 mV dec-1. In addition, we have confirmed that another reason improved Yb2O3, electron donor, can effectively regulate defects Ni atoms. This work offers feasible strategy developing highly effective alkaline media.
Язык: Английский