Sodium-ion batteries (SIBs) are emerging as a promising alternative to conventional lithium-ion technology, due to the abundance of sodium resources. Still, major drawbacks for the commercial application of SIBs lie in the slow kinetic processes and poor cycling performance of the devices. In this work, a hybrid nanocomposite of Sb₂O₃ nanoparticles anchored on N-doped graphene nanoribbons (GNR) is implemented as anode material in SIBs. The obtained Sb₂O₃/N-GNR anode delivers a reversible specific capacity of 642 mA h g⁻¹ after 100 cycles at 0.1 A g⁻¹ and exhibits a good rate capability. Even after 500 cycles at 5 A g⁻¹, the specific capacity is maintained at about 405 mA h g⁻¹. Such good Na storage performance is mainly ascribed to the beneficial effect of N doping for charge transfer and to the improved microstructure that facilitates the Na⁺ diffusion through the overall electrode.

中文翻译：

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锚定在 N 掺杂石墨烯纳米带上的 Sb2O3 纳米颗粒作为钠离子电池的改进阳极

由于钠资源丰富，钠离子电池 (SIB) 正在成为传统锂离子技术的有前途的替代品。尽管如此，SIBs 商业应用的主要缺点在于缓慢的动力学过程和设备的循环性能差。在这项工作中，锚定在 N 掺杂石墨烯纳米带 (GNR) 上的 Sb ₂ O ₃纳米粒子的混合纳米复合材料被用作 SIB 中的阳极材料。获得的Sb ₂ O ₃ /N-GNR负极在0.1 A g ^-1下循环100次后的可逆比容量为642 mA hg ^-1 ，并表现出良好的倍率性能。即使在 5 A g ^{-1下 500 次循环后}，比容量保持在约405 mA hg ^-1。这种良好的钠存储性能主要归因于氮掺杂对电荷转移的有益作用以及促进钠离子通过整个电极扩散的改善的微观^结构。