The development of cost effective, high performance, electrode materials for sodium ion batteries is of critical importance for large scale energy storage. Herein, we synthesize a novel nitrogen and fluorine co-doped porous carbon using a facile one-pot pyrolysis of three low cost components: polytetrafluoroethylene, a nitrogen-containing resin, and potassium hydroxide. The co-doped carbon comprises 3D assemblies of highly porous sheets with defects/disorders (and wide interlayer spacing of ~0.42 nm), which have a large surface area of 2040.3 m² g⁻¹ with hierarchical pore sizes. The advantageous combination of these structural features facilitates high sodium ion storage capacity, fast transfer kinetics and stable cycling. As a result, the co-doped carbon delivers an impressive 312.6 mAh g⁻¹ at 0.1 A g⁻¹ after 300 cycles and 215.3 mAh g⁻¹ at 5 A g⁻¹ after 5000 cycles (or 0.005% loss per cycle). Therefore, the excellent cycling performance of the carbon in combination with its convenient and low cost synthesis offers a promising sodium ion battery anode material for large scale energy storage.

用于钠离子电池的具有成本效益的高性能电极材料的开发对于大规模储能至关重要。本文中，我们使用三种低成本组分的简便一锅法热解合成了一种新型的氮和氟共掺杂多孔碳：聚四氟乙烯，一种含氮树脂和氢氧化钾。共掺杂碳包括具有缺陷/无序（且层间间距宽至〜0.42 nm）的高度多孔片材的3D组件，其表面积较大，为2040.3 m ²  g ^-1具有分级的孔径。这些结构特征的有利组合促进了高钠离子存储容量，快速转移动力学和稳定的循环。结果，共掺杂的碳在300次循环后在0.1 A g ^-1下提供了令人印象深刻的312.6 mAh g ^-1，在5000次循环后在5 A g ^{-1下提供了}215.3 mAh g ^-1（或每循环0.005％的损耗）。因此，碳的优异循环性能与其方便且低成本的合成相结合，为大规模储能提供了一种有前途的钠离子电池负极材料。