[en] Highlights: ► A novel LiFePO₄/graphene/carbon composite was prepared by using an in situ solvothermal method to synthesize LiFePO₄/graphene powders as precursor and then followed by carbon coating. ► A 3D conducting network constructed by the co-modification of graphenen and carbon coating significantly enhanced the electrochemical activity of LiFePO₄/carbon based electrode. ► With the graphene as an additive, the LiFePO₄/graphene/carbon composite revealed an attractive application prospect for the cathode material of lithium-ion batteries. - Abstract: A novel LiFePO₄/graphene/carbon composite as a performance-improved cathode material for lithium-ion batteries had been prepared by using an in situ solvothermal method to synthesize LiFePO₄/graphene powders as precursors and then followed by a carbon-coating process. The prepared samples of LiFePO₄/graphene/carbon was investigated comparatively with LiFePO₄/carbon and LiFePO₄/graphene composites by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and various electrochemical testing techniques. The results indicated that the co-modification of LiFePO₄ with graphene and carbon coating could construct an effective conducting network, which significantly enhanced the electrochemical activity of LiFePO₄/carbon based composite. Particularly, the LiFePO₄/graphene/carbon composite with a low content of graphene exhibited a high initial discharge capacity of 163.7 mAh g⁻¹ at 0.1 C and 114 mAh g⁻¹ at 5 C, as well as an excellent cycling stability.