Self-powered on-line ion concentration monitor in water transportation driven by triboelectric nanogenerator
Abstract
Ion concentration in water is a key criterion for evaluating water quality. In this work, we developed a self-powered on-line ion concentration monitor in water transportation based on impedance matching effect of triboelectric nanogenerator (TENG). A rotary disc-shaped TENG (RD-TENG) and an ion concentration sensor were fabricated based on the industrial printed circuit board (PCB) technology. Flowing water in the pipeline acts as the energy source to drive the RD-TENG and generate an open-circuit (Voc) of 210 V. The ion concentration sensor exhibits a nearly pure resistance characteristic under the alternating current (AC) signal with the frequency below 500 Hz, corresponding to the rotation speed of 250 rpm for the RD-TENG. The impedance matching relationship between the RD-TENG and the ion concentration sensor was experimentally studied and applied to elucidate the sensing mechanism. Finally, a self-powered sensing system integrated with an alarm circuit was assembled which exhibits excellent responsibility and high sensitivity. The change of ion concentration with only 1 × 10−5 mol/L can light up an alarm LED.
Cite this version of the work
Chen Chen, Zhen Wen, Aimin Wei, Xinkai Xie, Ningning Zhai, Xuelian Wei, Mingfa Peng, Yina Liu, Xuhui Sun, John Yeow
(2019).
Self-powered on-line ion concentration monitor in water transportation driven by triboelectric nanogenerator. UWSpace.
http://hdl.handle.net/10012/15170
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