Long Li, Liu Wenlin, Wang Zhao, He Wencong, Li Gui, Tang Qian, Guo Hengyu, Pu Xianjie, Liu Yike, Hu Chenguo
Department of Applied Physics, State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, Chongqing University, Chongqing, 400044, China.
Nat Commun. 2021 Aug 3;12(1):4689. doi: 10.1038/s41467-021-25047-y.
Non-contact triboelectric nanogenerator (TENG) enabled for both high conversion efficiency and durability is appropriate to harvest random micro energy owing to the advantage of low driving force. However, the low output (<10 μC m) of non-contact TENG caused by the drastic charge decay limits its application. Here, we propose a floating self-excited sliding TENG (FSS-TENG) by a self-excited amplification between rotator and stator to achieve self-increased charge density, and the air breakdown model of non-contact TENG is given for a maximum charge density. The charge density up to 71.53 μC m is achieved, 5.46 times as that of the traditional floating TENG. Besides, the high output enables it to continuously power small electronics at 3 m s weak wind. This work provides an effective strategy to address the low output of floating sliding TENG, and can be easily adapted to capture the varied micro mechanical energies anywhere.
具有高转换效率和耐用性的非接触式摩擦电纳米发电机（TENG），由于其低驱动力的优势，适合收集随机微能量。然而，由急剧的电荷衰减导致的非接触式TENG的低输出（<10 μC m）限制了其应用。在此，我们通过转子和定子之间的自激放大提出了一种浮动自激滑动TENG（FSS-TENG），以实现电荷密度的自增加，并给出了非接触式TENG的空气击穿模型以获得最大电荷密度。实现了高达71.53 μC m的电荷密度，是传统浮动TENG的5.46倍。此外，高输出使其能够在3 m s的弱风下持续为小型电子设备供电。这项工作提供了一种有效的策略来解决浮动滑动TENG的低输出问题，并且可以很容易地适用于在任何地方捕获各种微机械能。
