Display omitted Porous NaTi2(PO4)3@C nanocubes are fabricated by solvothermal/coating methods with using oleic acid as the carbon source. When studied as sodium-ion battery anode at 0.01∼3V, the NaTi2(PO4)3@C electrode delivers a high reserved capacity of 140 mAhg−1 at 1 Ag−1 for 1000 times. •Porous NaTi2(PO4)3@C nanocubes are synthesized.•Oleic acid is utilized as the carbon source.•NaTi2(PO4)3@C is to be measured at 0.01–3V for SIBs.•NaTi2(PO4)3@C achieves 201 mAhg−1 at 100 mAg−1 after 100 cycles.•NaTi2(PO4)3@C delivers 140 mAhg−1 at 1 Ag−1 for 1000 times. The NASICON-type NaTi2(PO4)3 has drawn much attention as anode material for sodium-ion batteries owing to its stable structural characteristics and low cost. Nevertheless, the insulating property of NaTi2(PO4)3 and the high working potential of about 2.1V vs. Na+/Na lead to its poor cycling stability, low rate performance as well as inferior capacity. In this work, we synthesize the porous NaTi2(PO4)3@C nanocubes by hydrothermal method and a subsequent coating process with using oleic acid as the carbon source. When utilized as the anode for sodium-ion battery in the voltage range between 0.01V and 3.0V, The as-synthesized porous NaTi2(PO4)3@C nanocubes deliver a discharge capacity of 201 mAh·g−1 at the current density of 100 mAg−1 after 100 cycles. Additionally, the reserved capacity of 140 mAh·g−1 could be achieved at the current density of 1 Ag−1 after 1000 cycles.