Jaramillo-Quintero Oscar A, Barrera-Peralta Royer V, Baron-Jaimes Agustin, Miranda-Gamboa Ramses A, Rincon Marina E
Catedrático CONACYT-Instituto de Energías Renovables, Universidad Nacional Autónoma de México Privada Xochicalco S/N C.P. 62580 Temixco Morelos Mexico
Instituto de Energías Renovables, Universidad Nacional Autónoma de México Privada Xochicalco S/N C.P. 62580 Temixco Morelos Mexico.
RSC Adv. 2021 Sep 23;11(50):31566-31571. doi: 10.1039/d1ra04618g. eCollection 2021 Sep 21.
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 SbO nanoparticles anchored on N-doped graphene nanoribbons (GNR) is implemented as anode material in SIBs. The obtained SbO/N-GNR anode delivers a reversible specific capacity of 642 mA h g after 100 cycles at 0.1 A g and exhibits a good rate capability. Even after 500 cycles at 5 A g, the specific capacity is maintained at about 405 mA h g. 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.
由于钠资源丰富，钠离子电池（SIBs）正成为传统锂离子技术的一种有前景的替代方案。然而，SIBs商业应用的主要缺点在于器件的动力学过程缓慢和循环性能较差。在这项工作中，一种锚定在氮掺杂石墨烯纳米带（GNR）上的SbO纳米颗粒的混合纳米复合材料被用作SIBs的负极材料。所制备的SbO/N-GNR负极在0.1 A g下循环100次后，可逆比容量为642 mA h g，并且表现出良好的倍率性能。即使在5 A g下循环500次后，比容量仍保持在约405 mA h g。如此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有利于钠在整个电极中扩散的改善的微观结构。
