摩擦电效应
纳米发生器
材料科学
光电子学
饱和电流
接触面积
电压
电气工程
复合材料
压电
工程类
作者
Boyuan Liu,Kaixian Li,Chuncai Shan,Xiaoyuan Zhou,Xianjie Pu,Chenguo Hu
出处
期刊:Nano Energy
[Elsevier]
日期:2024-08-06
卷期号:130: 110094-110094
标识
DOI:10.1016/j.nanoen.2024.110094
摘要
Charge generation and collection are key points for energy harvesting efficiency of direct current triboelectric nanogenerator (DC-TENG) based on the triboelectrification and electrostatic discharge. Herein, we propose a superior contact DC-TENG using polytetrafluoroethylene (PTFE) powder forming film and polyurethane (PU) foam as tribo-materials and multi-channel charge collection design. Different from traditional PTFE/PU TENG, the highly efficient contact of PTFE powder with PU foam increases electron transition in the triboelectrification process. The charge output of PTFE powder forming film TENG (PPF-TENG) increases by 40 % and 159 % than traditional PTFE film TENG with thickness of 30 µm and 140 µm, respectively. Three pairs of channels designed on slider with total area 21.6 cm2 realize the charge complete collection. The output current of PPF-TENG reaches its saturation in one period, 300 times faster than the traditional PTFE film TENG. The average power density of PPF-TENG up to 8.32 W m–2 is the highest record of sliding dual dielectric DC-TENGs. The PPF-TENG enables direct operation of 30 hydro-thermometers and 2880 green LEDs by hand motion, even under 85 % relative humidity conditions. This work provides a simple and efficient method to improve the output performance of TENG and gives the deep understanding of contact efficiency of tribo-layers.
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