Superior electrochemical activity with adequate electronic properties by the incorporation of nitrogen doping in carbon anode materials presents a promising prospect for the advancement of rechargeable batteries. However, the structure of two-dimensional (2D) nitrogen-rich carbon still limits the practical achievement of this concept. In order to overcome this issue, a “bottom-to-up” strategy is being presented which involved the development of highly nitrogen-doped carbon nanosheets (NDCSs) using a Cu-melamine coordination framework as a precursor. For the reinforcement of carbon framework during carbonization by utilizing the surface curing agent of hexamethylenetetramine, Cu²⁺ melamine coordinated with melamine molecule in order to build a 2D structure. Precise control of carbonizing temperature delivers command over lamellar thickness, crystallinity, nitrogen configuration and content (8.05–29.49 at.%). Consequently, the optimized sample brings considerable capacities of 871.1 and 258.8 mAh g⁻¹ at 0.05 A g⁻¹ for Li⁺ and Na⁺ storage, respectively, as well as high-rate performance (299.6 and 66.7 mAh g⁻¹ at 10 A g⁻¹) is achieved. This work will open a new pathway for the successful manufacturing of nitrogen-rich carbon nanosheets for energy storage applications.

通过在碳阳极材料中掺入氮掺杂，具有良好的电化学活性和足够的电子性能，为可充电电池的发展提供了广阔的前景。然而，二维（2D）富氮碳的结构仍然限制了这一概念的实际实现。为了克服这个问题，提出了一种“自下而上”的策略，其中涉及使用铜-三聚氰胺配位框架作为前体开发高氮掺杂碳纳米片 (NDCS)。^{利用六亚甲基四胺Cu 2+}表面固化剂在碳化过程中增强碳骨架三聚氰胺与三聚氰胺分子配位以构建二维结构。精确控制碳化温度可控制层状厚度、结晶度、氮配置和含量 (8.05–29.49 at.%)。因此，优化后的样品在 0.05 A g - ^1时分别为 Li ⁺和 Na ^{+存储带来了相当大的容量 871.1 和 258.8 mAh g - 1}，以及高倍率性能（在 10 A 时为299.6 和 66.7 mAh g ^{- 1} g ^{- 1}） 已完成。这项工作将为成功制造用于储能应用的富氮碳纳米片开辟一条新途径。