Metal–organic framework-templated nitrogen-doped graphitic carbon (NGC) and polydopamine-derived carbon (PDA-derived C)-double coated one-dimensional CoSe₂ nanorods supported highly porous three-dimensional microspheres are introduced as anodes for excellent Na-ion batteries, particularly with long-lived cycle under carbonate-based electrolyte system. The microspheres uniformly composed of ZIF-67 polyhedrons and polystyrene nanobeads (ϕ = 40 nm) are synthesized using the facile spray pyrolysis technique, followed by the selenization process (P-CoSe₂@NGC NR). Further, the PDA-derived C-coated microspheres are obtained using a solution-based coating approach and the subsequent carbonization process (P-CoSe₂@PDA-C NR). The rational synthesis approach benefited from the synergistic effects of dual carbon coating, resulting in a highly conductive and porous nanostructure that could facilitate rapid diffusion of charge species along with efficient electrolyte infiltration and effectively channelize the volume stress. Consequently, the prepared nanostructure exhibits extraordinary electrochemical performance, particularly the ultra-long cycle life stability. For instance, the advanced anode has a discharge capacity of 291 (1000th cycle, average capacity decay of 0.017%) and 142 mAh g⁻¹ (5000th cycle, average capacity decay of 0.011%) at a current density of 0.5 and 2.0 A g⁻¹, respectively.

引入金属有机骨架模板化氮掺杂石墨碳 (NGC) 和聚多巴胺衍生碳 (PDA 衍生碳)-双涂层一维 CoSe ₂纳米棒支撑高多孔三维微球作为阳极，以获得优异的 Na 离子电池，特别是在基于碳酸盐的电解质系统下具有长寿命循环。使用简易喷雾热解技术合成由 ZIF-67 多面体和聚苯乙烯纳米珠 ( φ = 40 nm)均匀组成的微球 ，然后进行硒化过程 (P-CoSe ₂ @NGC NR)。此外，PDA 衍生的 C 涂层微球是使用基于溶液的涂层方法和随后的碳化过程（P-CoSe ₂@PDA-C NR）。合理的合成方法受益于双碳涂层的协同效应，产生了高导电和多孔的纳米结构，可以促进电荷物质的快速扩散以及有效的电解质渗透，并有效地引导体积应力。因此，制备的纳米结构表现出非凡的电化学性能，特别是超长循环寿命稳定性。例如，先进的负极在0.5和2.0 A g的电流密度下的放电容量为291（第1000次循环，平均容量衰减为0.017%）和142 mAh g ⁻¹（第5000次循环，平均容量衰减为0.011%）^-1，分别。