Coaxial fiber-shaped supercapacitors with short charge carrier diffusion paths are highly desirable as high-performance energy storage devices for wearable electronics. However, the traditional approaches based on the multistep fabrication processes for constructing the fiber-shaped energy device still encounter persistent restrictions in fabrication procedure, scalability, and mechanical durability. To overcome this critical challenge, an all-in-one coaxial fiber-shaped asymmetric supercapacitor (FASC) device is realized by a direct coherent multi-ink writing three-dimensional printing technology via designing the internal structure of the coaxial needles and regulating the rheological property and the feed rates of the multi-ink. Benefitting from the compact coaxial structure, the FASC device delivers a superior areal energy/power density at a high mass loading, and outstanding mechanical stability. As a conceptual exhibition for system integration, the FASC device is integrated with mechanical units and pressure sensor to realize high-performance self-powered mechanical devices and monitoring systems, respectively.

具有短电荷载流子扩散路径的同轴纤维状超级电容器作为可穿戴电子设备的高性能能量存储设备是非常理想的。然而，基于用于制造纤维状能量器件的多步骤制造工艺的传统方法在制造过程，可扩展性和机械耐久性上仍然遇到持续的限制。为了克服这一严峻挑战，通过设计同轴针的内部结构并调节流变性能，通过直接相干的多墨水书写三维打印技术实现了多合一的同轴纤维状不对称超级电容器（FASC）设备属性和复合墨水的进给速度。得益于紧凑的同轴结构，FASC设备在高质量负载下可提供出色的面能量/功率密度，并具有出色的机械稳定性。作为系统集成的概念展览，FASC设备与机械单元和压力传感器集成在一起，分别实现高性能的自供电机械设备和监控系统。