采用水热方法合成了二硫化钼-碳复合材料(MoS2—C)。使用X射线衍射,扫描电子显微镜,透射电子显微镜,氮气吸.脱附和热重分析等手段对材料进行了物性表征。研究了MoS2-C储钠机理,将其用作有机系钠离子电容电池负极材料,组装了MoS2-C/AC电容电池,研究了电容电池的电化学性能。测试结果显示电容电池具有较高比能量和比功率,也表现出了较好的循环稳定性,经1000次循环后容量保持率高达96%。
A molybdenum disulfide-carbon composite (MoS2-C) was prepared by a hydrothermal method. X- ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and N2 adsorption-desorption tests were employed to characterize the physical properties of the composite. The charge storage mechanism of the MoS2-C was also investigated. The MoS2-C can be used as the negative electrode for supercapatteries using Na*-based organic electrolytes. A supercapattery of MoS2-C/AC (activated carbon) was constructed and its electrochemical performance was studied. The fabricated supercapattery exhibited relatively high energy density and power density. It also showed high cycle stability, displaying a 96% capacity retention after 1000 cycles.