A hierarchically porous nitrogen, oxygen-rich carbon material is developed by Mg(NO3)(2) treatment of filter paper in a one-step pyrolysis. The obtained carbons exhibit high specific surface area (1031 m(2) g(-1)), interconnected micro-, meso-, and macroporous conductive network and attractive heteroatom contents (2.84 at.% nitrogen and 13.82 at.% oxygen). The as-prepared carbon tested as anode for lithium-ion batteries displays an excellent reversible capacity (1560mAh g(-1) at 0.1 A g(-1)), superior rate capability (501 mAh g(-1) at 5 A g(-1)) and desired cycling performance (1538 mAh g(-1) at 0.1 A g(-1) and 1105 mAh g(-1) at 1 A g(-1) after 100 cycles). Moreover, a full battery with an as-obtained carbon anode and a LiFePO4 cathode delivers a high discharge capacity of 165 mAh g(-1) (the theoretical capacity of LiFePO4 was 170 mAh g(-1)) and good cyclability (156 mAh g(-1) after 20 cycles). (C) 2020 Elsevier B.V. All rights reserved.