Triboelectric nanogenerator (TENG) as a promising mechanical energy harvester has been rapidly developed recently. However, its robustness and endurance are seriously challenged by frequent and inevitable mechanical impacts during operation. Herein, we demonstrate, for the first time, a fully self-healing TENG possessing the ability to recover its performance after damage by introducing healable polymer materials and electrodes consisting of small magnets into the device. Our works imply that high-performance self-healing TENG can be readily realized attributed to not only the excellent mechanical-healing capability of the employed healable polymer but also the quick electric-healing capability of the novel magnetic-assisted electrodes designed for the TENG. The measurements indicate that both the output voltage and current of the healed device can reach up to above 95% of their original values even after the 5th breakage-healing cycle. Additionally, the presented TENG also shows shape-tailorability and object-adaptability. This maximizes the effective contact area of device and further increases the electric output performance to benefit energy harvesting and self-powered sensing of versatile mechanical motions. This research will offer feasible strategies for developing novel mechanical energy harvesting devices and self-powered sensors with recoverability, robustness and adaption.

摩擦电纳米发电机（TENG）作为一种有前途的机械能量收集器，最近得到了快速发展。但是，其坚固性和耐用性受到操作过程中频繁且不可避免的机械冲击的严重挑战。本文中，我们首次展示了一种完全自我修复的TENG，它具有通过在设备中引入可修复的聚合物材料和由小磁体组成的电极，在损坏后恢复其性能的能力。我们的工作表明，不仅由于所使用的可修复聚合物的优异机械修复能力，而且归功于为TENG设计的新型磁辅助电极的快速电修复能力，可以轻松实现高性能的自修复TENG。测量结果表明，即使在第五次破损修复循环之后，修复后的设备的输出电压和电流都可以达到其原始值的95％以上。此外，提出的TENG还显示了形状可定制性和对象自适应性。这样可以最大程度地增加设备的有效接触面积，并进一步提高电输出性能，从而有利于能量收集和多种机械运动的自供电传感。这项研究将为开发具有可恢复性，坚固性和适应性的新型机械式能量收集装置和自供电传感器提供可行的策略。这样可以最大程度地增加设备的有效接触面积，并进一步提高电输出性能，从而有利于能量收集和多种机械运动的自供电传感。这项研究将为开发具有可恢复性，坚固性和适应性的新型机械式能量收集装置和自供电传感器提供可行的策略。这样可以最大程度地增加设备的有效接触面积，并进一步提高电输出性能，从而有利于能量收集和多种机械运动的自供电传感。这项研究将为开发具有可恢复性，坚固性和适应性的新型机械式能量收集装置和自供电传感器提供可行的策略。