As the fast developments of wearable devices, artificial intelligences and Internet of Things, it is important to explore revolutionary approach and fabrication method for providing flexible and sustainable power sources. We report here a practical, ultraflexible and three-dimensional TENG (3D–TENG) that is capable of driving conventional electronics by harvesting biomechanical energy. Such TENG is made for the first time by the unique additive manufacturing technology—hybrid UV 3D printing. The TENG is made up of printed composite resin parts and ionic hydrogel as the electrification layer and electrode. A sustainable and decent output of 10.98 W/m³ (P_v, peak power per unit volume) and 0.65 mC/m³ (ρ_sc, transferred charge per unit volume) are produced under a low triggering frequency of ~ 1.3 Hz, which is attributed to the Maxwell's displacement current. Meanwhile, a self-powered SOS flickering and buzzing distress signal system, and smart lighting shoes are successfully demonstrated, as well as self-powered portable systems of a temperature sensor or a smart watch. Our work provides new opportunities for constructing multifunctional self-powered systems toward the applications in realistic environments.

随着可穿戴设备，人工智能和物联网的飞速发展，探索革命性的方法和制造方法以提供灵活且可持续的电源非常重要。我们在这里报告了一种实用的，超柔性的三维TENG（3D–TENG），它能够通过收集生物力学能量来驱动常规电子设备。这种TENG是通过独特的增材制造技术-混合UV 3D打印技术首次制成的。TENG由印刷的复合树脂部件和离子水凝胶作为带电层和电极组成。10.98 W / M的可持续和体面输出³（P _v，每单位体积的峰值功率）和0.65的MC /米³（ρ _SC，每单位体积转移的电荷）是在约1.3 Hz的低触发频率下产生的，这是由于麦克斯韦位移电流引起的。同时，成功演示了自供电的SOS闪烁蜂鸣求救信号系统，智能照明鞋以及温度传感器或智能手表的自供电便携式系统。我们的工作为在现实环境中针对应用构建多功能自供电系统提供了新的机会。