High performance floating self-excited sliding triboelectric nanogenerator for micro mechanical energy harvesting

作者：Long Li, Wenlin Liu, Zhao Wang, Wencong He, Li Gui, Qian Tang, Hengyu Guo, Xianjie Pu, Yike Liu, Chenguo Hu · 发表于：Nature Communications · 年份：2021 · DOI：10.1038/s41467-021-25047-y · 被引用次数：365 · 研究领域：Advanced Sensor and Energy Harvesting Materials、Conducting polymers and applications、Innovative Energy Harvesting Technologies

Abstract 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 −2 ) 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 −2 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 −1 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.