Facile Synthesis of Amino-functionalized Mesoporous Fe3O4/rGO 3D Nanocomposite by Diamine compounds as Li-ion Battery Anodes

•Synthesis of amino-functionalized mesoporous Fe3O4 nanoparticle using ethylenediamine (EDA).•Preparation of Fe3O4-E/graphene-based nanocomposite by ex situ method using EDA.•The rGO works as substrate and framework for Fe3O4 nanoparticles.•Fe3O4-E/rGO nanocomposite has shown high reversible charging capacity (∼465 mAh g−1 at the current density of 1000 mA g−1).•Fe3O4-E/rGO nanocomposite has shown average coulombic efficiency of ∼98% after 250 cycles at the current density of 1000 mA g−1.