A Li-ion capacitor (LIC) is constructed with Li4Ti5O12/C hybrid as the negative electrode and 3D porous graphene macroform (PGM) as the positive electrode. After optimizing the mass ratio (m+/m−) of the electrode materials with the value of 2, the as-fabricated LIC delivers a maximum energy density of 72 Wh kg−1 with the power density of 650 W kg−1 in a voltage range of 1.0–3.0 V. Furthermore, the energy density of the LIC reaches 40 Wh kg−1 even at a high power density of 8.3 kW kg−1. More significantly, the LIC exhibits a good cycling stability with the retention of 65% after 1000 cycles at a high current density of 10 A g−1, suggesting great potential application in energy storage of the LIC.