The development of miniaturized, wearable, and implantable electronics has increased the demand for small stand-alone power modules that have steady output and long life-time. Given the limited capacity of energy storage devices, one promising solution is to integrate energy harvesting and storage materials to efficiently convert ambient mechanical energy to electricity for direct use or to store the harvested energy by electrochemical means. Here, a highly compact self-charging power unit is proposed by integrating triboelectric nanogenerator with MXene-based microsupercapacitors in a wearable and flexible harvester-storage module. The device can utilize and store the random energy from human activities in a standby mode and provide power to electronics when active. As a result, our microsupercapacitor delivers a capacitance of 23 mF/cm² with 95% capacitance retention after 10,000 charge-discharge cycles, while the triboelectric nanogenerator exhibits a maximum output power of 7.8 µW/cm². Given the simplicity and compact nature, our device can be integrated with a variety of electronic devices and sensors.

小型，可穿戴和可植入电子产品的发展增加了对具有稳定输出和长寿命的小型独立电源模块的需求。鉴于储能设备的容量有限，一种有前途的解决方案是整合能量收集和存储材料，以有效地将周围的机械能转换为电能以直接使用，或通过电化学方式存储收集的能量。在此，通过将摩擦电纳米发电机与基于MXene的微型超级电容器集成在可穿戴且灵活的收割机-存储模块中，提出了一种高度紧凑的自充电式动力装置。该设备可以在待机模式下利用和存储来自人类活动的随机能量，并在活动时为电子设备供电。结果，我们的微型超级电容器可提供23 mF / cm的电容²在10,000次充放电循环后具有95％的电容保持率，而摩擦电动纳米发电机的最大输出功率为7.8 µW / cm ²。鉴于其简单性和紧凑性，我们的设备可以与各种电子设备和传感器集成在一起。