High-performance triboelectric nanogenerators for self-powered, in-situ and real-time water quality mapping
High-performance triboelectric nanogenerators for self-powered, in-situ and real-time water quality mapping
复制标题
用于自供电、原位和实时水质测绘的高性能摩擦纳米发电机
DOI：
10.1016/j.nanoen.2019.104117
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发表时间：
2019-12-01
期刊：
影响因子：
17.6
通讯作者：
Wang, Zhong Lin
中科院分区：
文献类型：
--
作者：
Bai, Yu;Xu, Liang;Wang, Zhong Lin
水污染是当今最严重的环境问题之一。为了实现可持续的、自主的水质监测，迫切需要一种能够采集本地波浪能的原位自供电传感系统。本文介绍了一种用于自供电水质监测的高性能串联盘式摩擦电纳米发电机（TD-TENG）。通过表面改性和优化设计，实现了可以被慢水波有效搅动的径向光栅结构，将波能收集TENG装置的峰值和平均功率分别提高到45.0 mW和7.5 mW，大约是典型球壳结构装置的35倍和24倍。平均功率密度达到7.3 W m（-3），创造了新的记录。通过简易的电源管理电路，短路电流大大提高到11 mA。高输出使自供电的总溶解固体测试系统成为可能，该系统可以放大到网络中，以便在大面积的现场实时绘制水质图。TD-TENG作为一种高功率波浪能收集装置，也为解决需要在水中自主工作的多功能传感平台的供电瓶颈开辟了一条途径，为智能环境和海洋科学提供了基础技术。
Water pollution is one of the most severe environmental issues nowadays. For sustainably and autonomously monitoring water quality, in-situ self-powered sensing systems which can harvest local wave energy are highly desired. Here, a high-performance tandem disk triboelectric nanogenerator (TD-TENG) for self-powered water quality monitoring is demonstrated. By surface modification and optimized design, a radial grating structure which can be effectively agitated by slow water waves is realized, boosting the peak and average power of waveenergy-harvesting TENG devices to 45.0 mW and 7.5 mW respectively, which are roughly 35 and 24 folds of the typical ball-shell structured device. The average power density reaches 7.3 W m(-3), setting up a new record. The short-circuit current is greatly enhanced to 11 mA through a facile power management circuit. The high output enables a self-powered total dissolved solids testing system, which can be scaled up into networks for in-situ, real-time mapping water quality in a large area. The TD-TENG as a high-power wave energy harvesting device also opens up an avenue to solve the bottleneck of power supply for versatile sensing platforms that need to work autonomously in water, providing a fundamental technology for smart environmental and ocean science.