Self‐Sacrifice Template Fabrication of Graphene‐like Nitrogen‐Doped Porous Carbon Nanosheets for Applications in Lithium‐Ion Batteries and Oxygen Reduction Reaction

Graphene‐like nitrogen‐doped porous carbon nanosheets (NPCN) with high specific surface area are successfully prepared via selecting glucose as a carbon precursor and simultaneously, g‐C 3 N 4 as a self‐sacrifice template and nitrogen source. Benefiting from its large porosity, high specific surface area, and nitrogen doping properties (mainly pyridinic nitrogen), the as‐obtained NPCN‐800 shows multifunctional applications as electrode material for lithium‐ion batteries (LIBs) and catalyst for oxygen reduction reactions (ORR). For LIBs application, the NPCN‐800 delivers the high reversible capacity of 1286 mAh g −1 at 0.1 A g −1 , rate capability of 258 mAh g −1 at 10 A g −1 , and cycle stability of 818 mAh g −1 at 0.2 A g −1 after 200 cycles. In addition, NPCN‐800 exhibits good ORR catalytic activity. Therefore, these attributes make NPCN an auspicious candidate for LIBs and ORR. This simple strategy for preparing nitrogen‐doped carbon‐based materials provides an efficient way to exploit cost‐effective electrode materials for LIBs and catalysts for ORR.