3D porous LiFePO4/graphene hybrid cathodes with enhanced performance for Li-ion batteries

► Three-dimensional porous LiFePO4-graphene is successfully prepared by facile sol-gel route. ► Graphene nanosheets, dispersed uniformly in porous LiFePO4, create an effective electronically conducting network. ► The hybrid LiFePO4-graphene exhibits a much higher reversible capacity compared with pristine porous LiFePO4.