Aug 2026· Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi· Vol 19, pp. 309-318· 0 citations· 20 references
Abstract
The oxygen evolution reaction (OER), a critical half-reaction in electrochemical water splitting and metal–air batteries, has attracted substantial research interest owing to its pivotal role in sustainable energy conversion and storage technologies. Manganese-based oxides (MnOx), characterized by their structural versatility and compositional abundance, represent a compelling class of materials for the rational design and development of efficient OER electrocatalysts. In this study, the catalytic activity of Mn3O4 electrocatalyst on oxygen evolution in basic medium was investigated. The structural and morphological characterization of the catalyst was carried out by X-ray diffraction (XRD) spectroscopy and scanning electron microscopy (SEM) methods. The Mn3O4 electrocatalyst demonstrated a low overpotential of 610 mV at 1 mA cm⁻², a Tafel slope of 256 mV dec⁻¹, and long-term stability in alkaline media, comparable to many reported non-noble metals based OER catalysts. These results underscore the potential of catalyst design strategies for developing efficient, earth-abundant, and cost-effective electrocatalysts for energy conversion applications.
The development of efficient and durable non-noble metal electrocatalysts toward the oxygen evolution reaction (OER) is critical for the high-efficiency storage of renewable energy. Herein, a facile and controllable sacrificial template strategy is reported. Using MIL-100(Fe) as the sacrificial template under alkaline...
Tian Zhao, Xing Zhang, Fu-Li Luo et al.· Dalton Transactions· 0 citations
The development of highly active and stable oxygen evolution reaction (OER) catalysts based on earth-abundant and low-cost metals remains a major challenge in the field of electrochemical water splitting. Previous studies have shown that metallic and bimetallic phosphates exhibit promising catalytic activity but often...
Yeslie Carrillo Cabrera, Jose Lasso, A. Peña-Duarte et al.· ACS Omega· 0 citations
In this work, we synthesized a nickel-supported tungsten oxide composite (WOx/Ni) by chemically reducing Ni (II) ions in the presence of WO3·H2O to develop an efficient electrocatalyst for the hydrogen evolution reaction (HER) in alkaline media. X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR)...
Nomin Bayansan, Bolormaa Burentogtokh, B. Batsuren et al.· ECS Advances· 0 citations
Platinum group metal‐free catalysts have attracted significant attention due to the high cost and scarcity of iridium for the oxygen evolution reaction (OER) in acidic media. However, the fundamental understanding of catalyst formation and active species under acidic conditions remains limited. In this work, iron–manga...
M. Rosenthal, K. Eklund, E. Rautama et al.· ChemSusChem· 0 citations
The hydrogen evolution reaction (HER) is a key half-reaction in electrocatalytic water splitting for hydrogen production that is limited by slow water dissociation kinetics in alkaline media. Therefore, developing high-performance nonprecious metal electrocatalysts for alkaline HER is crucial for sustainable energy con...
Jia-He Song, Di Yu, Yang-Yang Li et al.· Dalton Transactions· 0 citations
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 meth...
Yi-Kun Jin, Nan Li, Li-Jia She et al.· ACS Applied Nano Materials· 0 citations
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