The well‐matched technology of cathode and anode in Na‐ion full batteries is highly challenging yet critically important in practical applications. Here, the high‐performance Na‐ion full batteries are developed by using NaTi₂(PO₄)₃/N‐doped mesoporous hard carbon hybrid anode and porous Na₃V₂(PO₄)₃ cathode. The different anodes are designed for well‐matched Na‐ion full batteries. The unique sandwich and mesoporous structural features endow the hybrid anode with a high reversible capacity (240 mAh g⁻¹ at 1 C), high rate performance (109.7 mAh g⁻¹ at 100 C), ultrahigh energy/power densities (76.56 Wh kg⁻¹/5104 W kg⁻¹) and a long cycle‐life (capacity retention of 92.1 % after 1000 cycles at 100 C) in a half cell. In a full battery this hybrid anode can also deliver a higher capacitive contribution (79.5–87.7 %) and high energy/power densities (104 Wh kg⁻¹/5256 W kg⁻¹). This design provides a promising pathway for developing high performance and low‐cost Na‐ion full batteries.

中文翻译：

---

具有夹层结构的NaTi2（PO4）3 / N掺杂硬碳纳米复合材料，用于高性能钠离子全电池

钠离子全电池正极和负极的匹配技术极具挑战性，但在实际应用中至关重要。在这里，高性能Na-ion充满电池是通过使用NaTi ₂（PO ₄）₃ / N掺杂的中孔硬碳杂化阳极和多孔Na ₃ V ₂（PO ₄）₃阴极开发的。不同的阳极专为匹配的Na-ion充满电池而设计。独特的三明治和中孔结构特征赋予混合阳极以高的可逆容量（1 C时为240 mAh g ^-1），高倍率性能（100 C时为109.7 mAh g ^-1），超高能量/功率密度（76.56 Wh kg）^-1 / 5104 W kg ^-1）和半电池中的长循环寿命（在100 C下1000次循环后容量保持率为92.1％）。在一块完整的电池中，该混合阳极还可以提供更高的电容贡献（79.5％至87.7％）和高能量/功率密度（104 Wh kg ^-1 / 5256 W kg ^-1）。该设计为开发高性能和低成本Na-ion完整电池提供了有希望的途径。