Constructing robust 2D−based energy storage nanomaterials by well−defined pore architectures and rational surface modification are critical yet daunting challenges for rechargeable alkali−ion batteries. Herein, a new−type 2D interwoven multi pores decorated Co₃O₄@N−doped carbon nanosheet with rich surface defects is proposed as lithium/sodium ion anodes for the first time. The combining experimental researches, microscopic structure characterization and dynamics analysis demonstrate that the multi porous structure provides large numbers of channels to accelerate Li⁺/Na⁺ transport, rational surface design creates abundant active sites for fast ions reactions, while robust carbon shell offers excellent ionic/electrical conductivity and structural integrity. The obtained bifunctional composites deliver superior rate performance and long−term cycle stability (∼529 mA h g⁻¹ after 2000 cycles in LIBs and ∼166 mA h g⁻¹ after 1700 cycles in SIBs) due to the synergistic contribution of the unique structure and surface defects. Furthermore, it still remains a high reversible capacity (>610 mA h g⁻¹ after 1000 cycles) in full cell. Kinetic analysis reveals the designed anode exhibits prominent pseudocapacitive behavior, enabling ultra−fast lithium/sodium storage and ultrahigh−rate capability. This work offers valuable insights for developing high performance energy storage devices.

通过可定义的孔结构和合理的表面改性构造坚固的基于2D的储能纳米材料，对于可再充电的碱离子电池而言，是关键而艰巨的挑战。在此，首次提出了一种新型的二维交织的多孔装饰的具有丰富表面缺陷的Co ₃ O ₄ @N掺杂的碳纳米片作为锂/钠离子阳极。结合实验研究，微观结构表征和动力学分析表明，多孔结构提供了大量的通道来加速Li ⁺ / Na ⁺在运输过程中，合理的表面设计为快速的离子反应创建了丰富的活性位，而坚固的碳壳提供了出色的离子/电导率和结构完整性。将得到的双功能复合材料提供优异的倍率性能和长期循环稳定性（~529毫安汞柱^-1之后在LIBS 2000个循环和~166毫安汞柱^-1中的SIB 1700次循环后）由于独特的结构和表面的协同贡献缺陷。此外，它仍然保持高可逆容量（> 610 mA hg ^-11000个周期后）。动力学分析表明，设计的阳极表现出突出的伪电容特性，可实现超快的锂/钠存储和超高倍率能力。这项工作为开发高性能储能设备提供了宝贵的见识。