Zhou Huijie, Zheng Shasha, Guo Xiaotian, Gao Yidan, Li Hongpeng, Pang Huan
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, China.
School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China.
J Colloid Interface Sci. 2022 Dec 15;628(Pt B):24-32. doi: 10.1016/j.jcis.2022.08.043. Epub 2022 Aug 11.
The design of electrode internal structure plays an important role in improving the performance of micro-supercapacitors (MSCs). However, the complexity of the program hinders the development and application of Three-dimensional(3D)-printed MSCs. Herein, printable inks were prepared by using vanadium pentoxide nanowires as active materials, carbon nanotubes as collector and conductive agent, graphene oxide as adhesive, scaffold and water retaining agent. Benefiting from the liquid-crystal properties of materials and 3D printing technology as well as the adjustment of the materials proportion, onion-like structures with ordered porous layered structure and uniform electric-field-strength MSCs were constructed. The 3D-printed MSC has fine area capacitance (34.68 mF cm) and area energy density (1.73 µWh cm at a current density of 0.24 mA cm). Therefore, using the unique characteristics of materials to build an efficient 3D printing strategy is expected to provide a feasible solution for the construction of various MSCs and other high-energy storage systems.
电极内部结构的设计对提高微型超级电容器（MSC）的性能起着重要作用。然而，程序的复杂性阻碍了三维（3D）打印MSC的开发和应用。在此，以五氧化二钒纳米线为活性材料、碳纳米管为集流体和导电剂、氧化石墨烯为粘合剂、支架和保水剂制备了可打印墨水。受益于材料的液晶特性、3D打印技术以及材料比例的调整，构建了具有有序多孔层状结构和均匀电场强度的洋葱状结构的MSC。3D打印的MSC具有良好的面积电容（34.68 mF/cm²）和面积能量密度（在电流密度为0.24 mA/cm²时为1.73 μWh/cm²）。因此，利用材料的独特特性构建高效的3D打印策略有望为构建各种MSC和其他高能量存储系统提供可行的解决方案。
