Single-Electrode-Based Sliding Triboelectric Nanogenerator for Self-Powered Displacement Vector Sensor System
Single-Electrode-Based Sliding Triboelectric Nanogenerator for Self-Powered Displacement Vector Sensor System
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DOI：
10.1021/nn403021m
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发表时间：
2013-08-01
期刊：
影响因子：
17.1
通讯作者：
Wang, Zhong Lin
中科院分区：
文献类型：
--
作者：
Yang, Ya;Zhang, Hulin;Wang, Zhong Lin
我们报道了一种基于单电极的滑动模式摩擦电纳米发电机（TENG），它不仅可以收集机械能，而且是一种用于触摸板技术的自供电位移矢量传感器系统。通过利用具有表面蚀刻纳米颗粒的无极聚四氟乙烯（PTFE）贴片和接地的铝电极之间的相对滑动，制造的TENG可以在100 m Omega负载上产生高达1100 V的开路电压，6 mA/m(2)的短路电流密度和350 mW/m(2)的最大功率密度，可用于瞬间驱动100个绿色发光二极管（led）。TENG的工作原理是通过调节带摩擦电荷的聚四氟乙烯贴片与Al板之间的相对滑动距离来实现Al电极与地面之间的电荷转移。铝电极上的线性行光栅可以沿一个方向检测聚四氟乙烯贴片的滑动速度。此外，我们证明了沿四个方向排列的16个Al电极通道用于监测中心聚四氟乙烯贴片的位移（方向和位置），并实时记录16个通道的输出电压信号以形成映射图。这种设计的优点是只需要底部的Al电极接地，顶部的PTFE贴片不需要电接触，这有利于汽车旋转模式和触摸板应用中的能量收集。
We report a single-electrode-based sliding-mode triboelectric nanogenerator (TENG) that not only can harvest mechanical energy but also is a self-powered displacement vector sensor system for touching pad technology. By utilizing the relative sliding between an electrodeless polytetrafluoroethylene (PTFE) patch with surface-etched nanoparticles and an Al electrode that is grounded, the fabricated TENG can produce an open-circuit voltage up to 1100 V, a short-circuit current density of 6 mA/m(2), and a maximum power density of 350 mW/m(2) on a load of 100 M Omega, which can be used to instantaneously drive 100 green-light-emitting diodes (LEDs). The working mechanism of the TENG is based on the charge transfer between the Al electrode and the ground by modulating the relative sliding distance between the tribo-charged PTFE patch and the Al plate. Grating of linear rows on the Al electrode enables the detection of the sliding speed of the PTFE patch along one direction. Moreover, we demonstrated that 16 Al electrode channels arranged along four directions were used to monitor the displacement (the direction and the location) of the PTFE patch at the center, where the output voltage signals in the 16 channels were recorded in real-time to form a mapping figure. The advantage of this design is that it only requires the bottom Al electrode to be grounded and the top PTFE patch needs no electrical contact, which is beneficial for energy harvesting in automobile rotation mode and touch pad applications.