Flexible supercapacitors (FSCs) have attracted extensive attention due to their lightweight, easy integration, high power density, fast charge/discharge rate, and safe features. Printed FSC has provided an economical and simple solution for the fabrication of FSCs different from the traditional manufacturing methods. The successful preparation of printed FSCs mainly depends on the formulating of functional inks and designing of innovative electrode materials. Here, we reviewed the recent development of the ink's formulation principle, printable electrode materials, and integrated application of FSCs devices. The inks with excellent rheological properties, acquired by tuning the components (including binders, additives and solvents), are first introduced to match different printing techniques. The design of printable electrode materials is also highlighted, focusing on electrical double-layer capacitive carbons, pseudocapacitive materials (metal oxides, conducting polymer, etc.), and the newly emerging materials (MXenes, etc.). We concluded that 3D printing and new printable electrode materials will be key in successfully designing next-generation printed FSC with high energy and high power, and thus offer general guidelines to its integrated applications.

中文翻译：

---

印刷柔性超级电容器：油墨配方、可印刷电极材料和应用

柔性超级电容器（FSC）因其重量轻、易于集成、高功率密度、快速充电/放电速率和安全特性而受到广泛关注。与传统制造方法不同，印刷 FSC 为 FSC 的制造提供了一种经济且简单的解决方案。印刷FSCs的成功制备主要取决于功能墨水的配制和创新电极材料的设计。在这里，我们回顾了油墨的配方原理、可印刷电极材料和 FSCs 设备的集成应用的最新进展。通过调整成分（包括粘合剂、添加剂和溶剂）获得的具有优异流变特性的油墨首先被引入以匹配不同的印刷技术。可印刷电极材料的设计也很突出，重点关注双电层电容碳、赝电容材料（金属氧化物、导电聚合物等）和新兴材料（MXenes等）。我们得出结论，3D 打印和新型可打印电极材料将是成功设计下一代高能量和高功率打印 FSC 的关键，从而为其集成应用提供一般指导。