Graphene/Fe₃O₄ Nanocomposite as a Promising Material for Chemical Current Sources: A Theoretical Study

The outstanding mechanical and conductive properties of graphene and high theoretical capacity of magnetite make a composite based on these two structures a prospective material for application in flexible energy storage devices. In this study using quantum chemical methods, the influence of magnetite concentration on energetic and electronic parameters of graphene/Fe₃O₄ composites is estimated. It is found that the addition of magnetite to pure graphene significantly changes its zone structure and capacitive properties. By varying the concentration of Fe₃O₄ particles, it is possible to tune the capacity of the composite for application in hybrid and symmetric supercapacitors.