ACS Applied Materials & Interfaces, Год журнала: 2025, Номер 17(19), С. 28199 - 28210

Опубликована: Апрель 29, 2025

Electrochemical water splitting has emerged as a promising solution for sustainable hydrogen production, but the development of efficient, durable, and cost-effective bifunctional electrocatalysts remains critical challenge. In this work, we report novel fabrication composite materials consisting nickel molybdate (NiMoO4) coated with polyaniline (PANI). NiMoO4 nanorods were initially synthesized on foam (NF) using hydrothermal technique subsequently PANI via UV-assisted polymerization. The resulting NiMoO4@PANI nanostructures demonstrate increased active sites improved efficiency in electron transfer catalytic activity. This combination enhanced evolution reaction (HER) oxygen (OER) performance, achieving reduced overpotential values 88 167 mV HER OER at 10 mA cm-2, respectively. Comprehensive electrochemical evaluations, including Tafel slope, impedance spectroscopy (EIS), double-layer capacitance (Cdl) measurements, validate enhancements kinetics charge facilitated by coating. Density functional theory (DFT) calculations offer further insights into efficiency, showing barrier (ΔGb = 0.45 eV), nearly negligible adsorption energy (ΔG*H 0.08 appropriate (ΔG*OOH - ΔG*OH 2.58 high density states close to Fermi level. exhibit excellent stability 310 h without interruption, suggesting potential production.

Язык: Английский