Nanomaterials and System Lab, Department of Mechatronics Engineering, Jeju National University, Jeju 63243, Republic of Korea.
Nanoscale. 2018 Aug 7;10(29):13883-13888. doi: 10.1039/c8nr03998d. Epub 2018 Jul 11.
Herein, we are demonstrating the use of a binder-free electrode based on copper-molybdenum-sulfide nanostructures grown on nickel foam (CMS/Ni) as a novel negative electrode for supercapacitors. The cyclic voltammetry and charge-discharge analyses reveal the pseudocapacitive nature of the CMS/Ni electrode with a high specific capacity of 633 mAh g (∼20-fold higher than the binder-based CMS electrode) which is mainly due to their superior electronic conductivity and short ion transport pathways. Furthermore, the fabricated symmetric supercapacitor using the CMS/Ni electrode delivered a high device capacitance (265.62 F g), high energy density (23.61 Wh kg) and long cycle-life. The results ensure that the CMS/Ni binder-free electrode will be a promising negative electrode for high-performance supercapacitors.
在此，我们展示了一种基于生长在泡沫镍上的铜钼硫化物纳米结构的无粘结剂电极（CMS/Ni）在超级电容器中的应用。循环伏安法和充放电分析表明，CMS/Ni 电极具有赝电容特性，比基于粘结剂的 CMS 电极具有更高的比容量（633 mAh g，高 20 倍），这主要归因于其优异的导电性和短的离子传输途径。此外，使用 CMS/Ni 电极制备的对称超级电容器具有高器件电容（265.62 F g）、高能量密度（23.61 Wh kg）和长循环寿命。结果表明，CMS/Ni 无粘结剂电极有望成为高性能超级电容器的负极材料。
