Green Synthesis of Fe₃O₄/C Nanocomposite Using Olive Leaf Extract for Electrochemical Hydrogen Storage: Toward Renewable Energy Applications

In recent years, the global energy crisis and environmental pollution have raised concerns about the sustainability of fossil fuels. Hydrogen, as an efficient, renewable, and clean fuel, has gained attention as a potential alternative to fossil fuels. However, challenges in hydrogen storage need to be addressed for its widespread adoption, particularly in portable applications such as fuel cells and transportation. In this study, Fe₃O₄/C nanocomposites were synthesized using a green and simple one-pot hydrothermal method, employing FeCl₃·۶H₂O as the precursor and olive leaf extract as both the precipitating agent and a source of activated carbon. The electrochemical hydrogen storage (EHS) capacity of the nanocomposite was evaluated using chronopotentiometry, achieving a discharge capacity of ۳۵۰۰ mAh/g after ۲۵ cycles at ۱ mA current. The nanocomposite demonstrated a ۶۵% coulombic efficiency after ۲۵ cycles, showing promise for use in renewable energy applications, especially in hydrogen storage for fuel cells and other clean energy technologies. This work presents a novel approach to developing high-performance hydrogen storage materials with potential applications in reducing reliance on fossil fuels

کلیدواژه ها:

Electrochemical hydrogen storage ، green synthesis ، Fe₃O۴/C nanocomposite ، renewable energy ، hydrogen storage ، fuel cells ، chronopotentiometry