Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

In this study, a self-supported material with unique ternary metal sulfide nanorod array structure was fabricated in situ on copper foam via facile one-step electrodeposition approach ((NiCo-Cu)Sx/CF). The electrochemically driven rapid generation of abundant S2- ions from thiourea accelerates their combination Ni2+ and Co2+, resulting catalytically enriched surface the array. high-density arrays provide maximally accessible active sites, thereby enhancing hydrogen evolution reaction (HER). grown effectively eliminates need for binders (common conventional catalysts), avoids additional interfacial resistance, ensures long-term stability during electrocatalytic operation. synergistic interactions among components (Ni, Co, Cu) optimize local electronic environment, creating favorable conditions catalytic evolution. experimental results demonstrate that nanocomposite (denoted as (NiCo-Cu)Sx/CF) exhibits superior performance compared to its binary counterparts. Remarkably, catalyst required only 42 161 mV overpotential deliver 10 mA·cm-2 100 current densities 1 M KOH, respectively, h operational stability. This work provides viable strategy developing non-noble catalysts energy conversion applications.

Language: Английский