Higher requirements have been put forward for self-powered systems operated with weak energy in the environment. Sensitivity, efficiency and power management design of the energy harvesting module play key roles on the sustainability of the system. In this work, we present an ultrasensitive triboelectric nanogenerator (TENG) with Cu coated fluorinated ethylene propylene films stacked in a unipolar manner and suspended by springs. Triboelectrification and electrostatic induction take place between every adjacent film surfaces, during which transferred charges are increased by at least 50%, leading to an increased efficiency. Also, the reduced framework weight makes soft spring can be adopted for greatly improved sensitivity. Depending on the investigation of mechanical motion in the system, TENG's energy harvesting efficiency is boosted by bringing down the moment of inertia. The linear region characteristic of an n-type junction field-effect transistor is utilized for a low-loss power management design with greatly reduced power consumption and start-up time for superior weak energy harvesting applications. Ultrasensitive and high efficient energy harvester with low-loss power management demonstrated in this work promises an outlook for an effective approach to achieve more powerful and more sustainable self-powered systems working with comprehensive ambient weak mechanical energy fitted in diverse application circumstances.

对于在环境中能量较弱的自供电系统提出了更高的要求。能量收集模块的灵敏度，效率和电源管理设计对系统的可持续性起着关键作用。在这项工作中，我们提出了一种超敏摩擦电纳米发电机（TENG），其具有以单极方式堆叠并被弹簧悬挂的涂有铜的氟化乙烯丙烯薄膜。摩擦起电和静电感应发生在每个相邻的薄膜表面之间，在此期间，传输的电荷增加了至少50％，从而提高了效率。而且，减轻的框架重量使得可以采用软弹簧，从而大大提高了灵敏度。根据对系统中机械运动的调查，TENG' 降低惯性矩可提高能量收集效率。n型结型场效应晶体管的线性区域特性可用于低损耗电源管理设计，该产品的功耗和启动时间大大降低，适用于出色的微弱能量收集应用。这项工作中展示的具有低损耗电源管理的超灵敏，高效的能量采集器，有望获得一种有效的方法，以实现更强大，更可持续的自供电系统，并通过适合各种应用环境的综合环境弱机械能来工作。n型结型场效应晶体管的线性区域特性可用于低损耗电源管理设计，该产品的功耗和启动时间大大降低，适用于出色的微弱能量收集应用。这项工作中展示的具有低损耗电源管理的超灵敏，高效的能量采集器，有望获得一种有效的方法，以实现更强大，更可持续的自供电系统，并通过适合各种应用环境的综合环境弱机械能来工作。n型结型场效应晶体管的线性区域特性可用于低损耗电源管理设计，该产品的功耗和启动时间大大降低，适用于出色的微弱能量收集应用。这项工作中展示的具有低损耗电源管理的超灵敏，高效的能量采集器，有望获得一种有效的方法，以实现更强大，更可持续的自供电系统，并通过适合各种应用环境的综合环境弱机械能来工作。