Al Imam Mohammad Ibn Saud Islamic University (IMSIU), College of Sciences, Department of Chemistry, 11623 Riyadh, Saudi Arabia.
Department of Chemistry, King Saud University, Riyadh, Saudi Arabia.
Int J Biol Macromol. 2018 Dec;120(Pt B):2271-2278. doi: 10.1016/j.ijbiomac.2018.08.104. Epub 2018 Aug 23.
A novel high-performance supercapacitor was fabricated using spinal (nickel ferrite) nanoparticles uniformly implanted into nitrogen-doped carbon matrix. The nanocomposite was fabricated with bimetallic polymer complexes for the first time. The fabricated nanocomposite was characterized using FTIR, TGA, Raman, XRD, BET, XPS, SEM and TEM technique. The nanocomposite used as the electrode material for assembling electrodes for supercapacitor over nickel foam, and show an excellent specific capacitance of 958.33 F g at a current density of 5.0 A g in a two-electrode system, using 6 M KOH solution as electrolyte. The energy density was observed 43.75 Wh kg at a power density of 516.25 W kg, moreover, at a high power density of 882 W kg, it still attains the energy density of 26.25 W h kg and, supports the well-known Ragone plot. The high cycling stability (9.75% loss over 6000 cycles) has been demonstrated and shows excellent stability. The results manifest the great potential of this nanocomposite for next-generation high-power applications. Thus, an advanced electrode material for high-performance supercapacitor was successfully assembled first time by a simple and scalable synthesis route.
采用均匀植入氮掺杂碳基质中的脊髓（镍铁氧体）纳米粒子，制备了一种新型高性能超级电容器。该纳米复合材料是首次使用双金属聚合物配合物制备的。采用傅里叶变换红外光谱（FTIR）、热重分析（TGA）、拉曼光谱（Raman）、X 射线衍射（XRD）、BET、X 射线光电子能谱（XPS）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）技术对纳米复合材料进行了表征。该纳米复合材料用作镍泡沫上组装超级电容器电极的电极材料，在 6 M KOH 溶液作为电解质的两电极系统中，电流密度为 5.0 A/g 时，表现出 958.33 F/g 的优异比电容。在功率密度为 516.25 W/kg 时，观察到能量密度为 43.75 Wh/kg，此外，在 882 W/kg 的高功率密度下，它仍能达到 26.25 Wh/kg 的能量密度，并支持著名的拉贡图。该超级电容器具有出色的循环稳定性（6000 次循环后仅损失 9.75%）。研究结果表明，这种纳米复合材料具有用于下一代高功率应用的巨大潜力。因此，首次通过简单且可扩展的合成路线成功组装了用于高性能超级电容器的先进电极材料。
