Lv Yi, Bu Tianzhao, Zhou Han, Liu Guoxu, Chen Yunkang, Wang Zhaozheng, Fu Xianpeng, Lin Yuan, Cao Jie, Zhang Chi
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China.
School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
Nanoscale. 2022 Jun 1;14(21):7906-7912. doi: 10.1039/d2nr01530g.
Triboelectric nanogenerator (TENG) as a new energy harvester has attracted significant attention due to its excellent output performance and high energy conversion efficiency at low-frequency, small-amplitude and weak-force compared with a traditional electromagnetic generator. Here, an ultraweak mechanical stimuli actuated single electrode triboelectric nanogenerator (UMA-TENG) has been studied with an atomic force microscope. The electrical output and force curve of UMA-TENG were studied at first, as well as the maximum output performance and highest energy conversion efficiency. Then the influence of the driving frequency, separation distance and motion amplitude was investigated, respectively. Moreover, by introducing an external switch to reach a cycle of maximized energy output, the maximum energy conversion efficiency of the UMA-TENG was up to 73.6% with an input mechanical energy of 48 pJ. This work demonstrates that the TENG shows excellent performance in ultraweak mechanical stimuli and could broaden the applications of the TENG in sensors, actuators, micro-robotics, micro-electro-mechanical-systems, and wearable electronics.
摩擦纳米发电机（TENG）作为一种新型能量收集器，因其与传统电磁发电机相比，在低频、小振幅和弱力条件下具有出色的输出性能和高能量转换效率而备受关注。在此，利用原子力显微镜对一种超微弱机械刺激驱动的单电极摩擦纳米发电机（UMA-TENG）进行了研究。首先研究了UMA-TENG的电输出和力曲线，以及最大输出性能和最高能量转换效率。然后分别研究了驱动频率、分离距离和运动幅度的影响。此外，通过引入外部开关以实现能量输出最大化的循环，在输入机械能为48 pJ时，UMA-TENG的最大能量转换效率高达73.6%。这项工作表明，TENG在超微弱机械刺激方面表现出优异性能，可拓宽TENG在传感器、致动器、微型机器人、微机电系统和可穿戴电子设备中的应用。
