Wind energy can be efficiently converted into electricity by the triboelectric nanogenerator (TENG), which provides an effective solution for wind energy harvesting. Here, a novel soft-soft contact TENG based on nonlinear coupling galloping phenomenon (GS-TENG) was proposed. Soft-soft contact was achieved utilizing soft Ecoflex foam film and soft spring steel sheet. A microsphere structured surface was constructed on the Ecoflex film through foaming technology, which increases the surface charge density of the triboelectric materials effectively. Accordingly, the open-circuit voltage of triboelectric materials can reach up to 1700 V. Moreover, the GS-TENG is capable of self-protection under high wind speeds by actively reducing its amplitude and features an ultra-wide working bandwidth (2.292 m/s∼>7.8 m/s). When the wind speed reaches 4.74 m/s, the GS-TENG can generate up to 4.67 mW of output power. Notably, the GS-TENG’s flow-induced vibration dual mass system structure may pave the way for a new design paradigm in flow-induced vibration TENGs. GS-TENG can drive electronic clocks continuously and drive wireless temperature sensing systems successfully by wind energy harvesting. These results demonstrate that the GS-TENG we developed has high efficiency in wind energy harvesting, and this work greatly promotes the practical application of TENGs.

中文翻译：

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利用非线性耦合驰动现象收集风能的软-软接触 TENG


摩擦电纳米发电机 （TENG） 可以将风能有效地转化为电能，这为风能收集提供了有效的解决方案。在此，提出了一种基于非线性耦合奔马现象的新型软-软接触 TENG （GS-TENG）。利用柔软的 Ecoflex 泡沫薄膜和柔软的弹簧钢板实现软-软接触。通过发泡技术在 Ecoflex 薄膜上构建了微球结构表面，有效地提高了摩擦电材料的表面电荷密度。因此，摩擦电材料的开路电压可以达到 1700 V。此外，GS-TENG能够在高风速下通过主动减小其振幅进行自我保护，并具有超宽的工作带宽（2.292 m/s∼>7.8 m/s）。当风速达到 4.74 m/s 时，GS-TENG 可产生高达 4.67 mW 的输出功率。值得注意的是，GS-TENG 的流致振动双质量系统结构可能为流致振动 TENG 的新设计范式铺平道路。GS-TENG可以连续驱动电子钟，并通过风能收集成功驱动无线温度传感系统。这些结果表明，我们开发的 GS-TENG 在风能收集方面具有很高的效率，这项工作极大地促进了 TENG 的实际应用。