Portable energy solutions are highly desired in the era of the Internet of Things for powering various distributed microelectronic devices. At the same time, the energy crisis and catastrophic global warming are becoming serious problems in the world, emphasizing the urgent need for clean and renewable energy. Here, we report a low-cost, high-performance, and portable hand-driven whirligig structured triboelectric–electromagnetic hybrid nanogenerator (whirligig-HNG) for multi-strategy energy harvesting. The whirligig-HNG comprises a dynamic supercoiling TENG via the pulling-strings and inner-distributed EMGs (variable number) in the rotator. The whirligig structure can readily convert linear displacement in low frequency into rotary motion in extremely high frequency. Based on this ingenious design, the whirligig-HNG is capable to harvest the triboelectric energy from the supercoiling/uncoiling process from the pulling strings and simultaneously utilize the high-frequency rotation energy via electromagnetic induction. We have systematically investigated the working mechanism of the whirligig-HNG for coupled energy harvesting and compared the individual characteristics of TENG and EMG. The whirligig-HNG is successfully demonstrated to light up more than 100 commercial light-emitting diodes (LEDs) and drive portable electronics. This research presents the enormous potential of whirligig-HNG as a manual and portable power supply for powering various portable electronics.

Graphical Abstract

中文翻译：

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用于多策略能量收集的受陀螺启发的混合纳米发电机

物联网时代迫切需要便携式能源解决方案来为各种分布式微电子设备供电。与此同时，能源危机和灾难性的全球变暖正在成为世界上的严重问题，强调了对清洁和可再生能源的迫切需求。在这里，我们报告了一种用于多策略能量收集的低成本、高性能和便携式手动陀螺结构摩擦电-电磁混合纳米发电机 (whirligig-HNG)。whirligig-HNG 包括一个动态超螺旋 TENG，通过旋转器中的拉弦和内部分布的 EMG（可变数量）。陀螺仪结构可以很容易地将低频的直线位移转换成极高频率的旋转运动。基于这种巧妙的设计，whirligig-HNG 能够从拉绳的超卷绕/展开过程中收集摩擦电能，同时通过电磁感应利用高频旋转能量。我们系统地研究了 whirligig-HNG 耦合能量收集的工作机制，并比较了 TENG 和 EMG 的个体特征。成功演示了 whirligig-HNG 可以点亮 100 多个商用发光二极管 (LED) 并驱动便携式电子产品。这项研究展示了 whirligig-HNG 作为为各种便携式电子设备供电的手动便携式电源的巨大潜力。我们系统地研究了 whirligig-HNG 耦合能量收集的工作机制，并比较了 TENG 和 EMG 的个体特征。成功演示了 whirligig-HNG 可以点亮 100 多个商用发光二极管 (LED) 并驱动便携式电子产品。这项研究展示了 whirligig-HNG 作为为各种便携式电子设备供电的手动便携式电源的巨大潜力。我们系统地研究了 whirligig-HNG 耦合能量收集的工作机制，并比较了 TENG 和 EMG 的个体特征。成功演示了 whirligig-HNG 可以点亮 100 多个商用发光二极管 (LED) 并驱动便携式电子产品。这项研究展示了 whirligig-HNG 作为为各种便携式电子设备供电的手动便携式电源的巨大潜力。

图形概要