Aug 2026· ACS Applied Nano Materials· Vol 9, pp. 17147-17155· 0 citations· 57 references
Abstract
The development of highly efficient, durable, and cost-effective electrocatalysts is essential for enhancing the oxygen evolution reaction (OER) performance in an alkaline water electrolysis. Herein, we report the synthesis of FeS2–Co3O4 heterojunction electrocatalysts supported on nickel foam via a hydrothermal method. Electrochemical evaluations conducted in 1.0 M KOH reveal that the optimized FeS2–Co3O4/NF-2 catalyst delivers an overpotential as low as 89 mV at 10 mA cm–2, along with a Tafel slope of 34.7 mV dec–1. Moreover, chronopotentiometric tests at constant current densities of 10 and 50 mA cm–2 for 50 h show negligible potential drift, demonstrating outstanding OER activity and long-term operational stability. Experimental evidence further confirms that the well-defined heterointerface between FeS2 and Co3O4 effectively modulates the interfacial charge distribution and optimizes the electronic configuration of active sites, thereby boosting intrinsic OER kinetics. This study offers a feasible and scalable route for the rational design of nonprecious-metal heterojunction electrocatalysts toward efficient OER applications.
The creation of electrocatalysts composed of nonprecious metals, which must be efficient, durable, and economical, constitutes a major scientific hurdle for achieving practical overall water splitting (OWS). In this study, a layered Ni2P–Fe2P–Co2P nanoarray electrocatalyst was fabricated on nickel foam (NF) using NiF...
Jiang-Nan Xu, Xuan-Hang Zhang, M. Naghizadeh et al.· Industrial & Engineering...· 0 citations
The development of efficient and low-cost non-noble metal electrocatalysts is crucial for advancing hydrogen production via water electrolysis. Herein, a non-noble metal multi-level heterostructured bifunctional electrocatalyst, Mo15S19/NiS/FeS with typical nanosheet morphology, was in situ constructed on nickel foam...
Yu-Ying Yang, Wen-Hui Zhang, Qian-Nan Sun et al.· ACS Applied Nano Materials· 0 citations
Developing efficient, non-noble metal electrocatalysts for the oxygen evolution reaction (OER) remains central to advancing water-splitting technologies for sustainable hydrogen production. Herein, a perovskite-spinel oxide nanocomposite, Co3O4–LaFeO3 nanoparticles anchored on nearly spherical Fe2O3 nanoparticles (LF...
ABSTRACT The water electrolysis is one of the key processes for producing hydrogen—a clean and sustainable energy carrier. However, its wide application onto the industrial scale still lack of the long‐lasting and highly efficient electrocatalysts for the kinetically sluggish oxygen evolution reaction (OER). Here, we d...
Fatma Aras, U. Burkhardt, S. Altendorf et al.· Advancement of science· 0 citations
: Electrocatalytic hydrogen evolution reaction (HER) underpins the scalable synthesis of renewable green hydrogen, yet conventional catalytic systems are constrained by overreliance on scarce noble metals, sluggish mass transport kinetics, and inefficient intermediate modulation. In this work, an efficient HER electroc...
The development of cost-effective, high-performance electrocatalysts for the alkaline hydrogen evolution reaction is imperative for sustainable hydrogen production via water electrolysis. However, the intrinsically sluggish reaction kinetics and insufficient exposed active sites of transition metal sulfides remain crit...
