Herein, molybdenum trisulfide/nickel disulfide-reduced graphene oxide (Mo₂S₃/NiS₂-RGO) composites as anode material for sodium-ion batteries (SIBs) and sodium-ion capacitors (SICs) were synthesized by one-step facile hydrothermal method. Through electron microscopy analysis, it could be observed that the Mo₂S₃/NiS₂ nano-rods and nano-balls were dispersed uniformly over the two-dimensional RGO sheets. When tested as an anode material, Mo₂S₃/NiS₂-RGO showed a considerable reversible capacity of 653.1 mA h g⁻¹ at 100 mA g⁻¹ after 50 cycles and capacity retention of 197.5 mA h g⁻¹ at 5000 mA g⁻¹ after 226 cycles. The sodium storage mechanism of Mo₂S₃/NiS₂-RGO was explained by ex situ XPS. Furthermore, as-fabricated SICs delivered an excellent specific energy of 182.7 W h kg⁻¹ (at 1120 W kg⁻¹), and SIBs exhibited the discharge capacities of 85 mA h g⁻¹ at 2 C. Overall, the superior electrochemical performances of Mo₂S₃/NiS₂-RGO demonstrated that it was a promising anode materials to construct high-performance full cell.

中文翻译：

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高性能Mo 2 S 3 / NiS 2 -RGO阳极材料的合成及其在钠离子电池和钠离子电容器中的应用

在此，通过一步法简便的水热法合成了三硫化钼/二硫化镍还原的氧化石墨烯（Mo ₂ S ₃ / NiS ₂ -RGO）复合材料，作为钠离子电池（SIB）和钠离子电容器（SIC）的负极材料。方法。通过电子显微镜分析，可以观察到Mo ₂ S ₃ / NiS ₂纳米棒和纳米球均匀地分散在二维RGO片材上。当作为阳极材料进行测试时，Mo ₂ S ₃ / NiS ₂ -RGO在100 mA g ^-1下显示出653.1 mA h g ^-1的可逆容量经过50次循环后，在226次循环后，在5000 mA g ^-1下的容量保持率为197.5 mA h g ^-1。Mo ₂ S ₃ / NiS ₂ -RGO的钠储存机理通过异位XPS进行了解释。此外，制成的SIC的出色比能为182.7 W h kg ^-1（在1120 W kg ^-1时），SIB在2 C时的放电容量为85 mA h g ^-1。 Mo ₂ S ₃ / NiS ₂ -RGO证明它是构建高性能全电池的有前途的阳极材料。