Fe/Co/Ni-DOPED MOS2 AN ELECTROCATALYST FOR OVERALL WATER SPLITTING

Electrochemical water splitting is a promising method for sustainable hydrogen production, addressing global energy challenges. However, its practical application is limited by the need for efficient and durable electrocatalysts for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). In this study, MoS₂ was doped with Co, Ni, and Fe at varying concentrations (5:0.5, 5:1, and 5:1.5) using a hydrothermal synthesis method to evaluate their potential as electrocatalysts for water splitting. Characterization revealed that metal doping significantly altered the electronic and morphological properties of MoS₂, enhancing its catalytic performance. Electrochemical evaluations in alkaline media demonstrated that Co-doped MoS₂ at a 5:1 ratio exhibited an overpotential of 162 mV at a current density of 10 mA/cm² for HER, attributed to improved hydrogen adsorption and increased active sites. Conversely, Fe-doped MoS₂ at the same ratio showed an overpotential of 327 mV for OER, indicating efficient oxygen evolution facilitation. Ni-doped MoS₂ displayed moderate performance, with overpotentials of 249 mV for HER and 345 mV for OER at a 5:1 doping concentration. Stability tests indicated that both Co-doped and Fe-doped MoS₂ maintained consistent performance over 24 hours, suggesting their suitability for long-term water-splitting applications. These findings highlight the critical role of metal doping in enhancing the catalytic properties of MoS₂. Specifically, Co-doped MoS₂ is highly effective for HER, while Fe-doped MoS₂ excels in OER, making them promising candidates for overall water splitting. This study provides valuable insights into designing advanced materials for green hydrogen production and deepens our understanding of the mechanisms governing catalytic performance. This abstract maintains brevity while emphasizing the impact of different doping concentrations on the catalytic performance of MoS₂-based electrocatalysts. By focusing on key findings and their implications, it effectively communicates the essence of your research.