jz502613s_si_001.pdf (1.49 MB)
Influences of Surface and Ionic Properties on Electricity Generation of an Active Transducer Driven by Water Motion
journal contribution
posted on 2015-12-17, 07:21 authored by Junwoo Park, YoungJun Yang, Soon-Hyung Kwon, Youn Sang KimIn
this Letter, we discuss the surface, ionic properties, and scale-up
potential of an active transducer that generated electricity from
natural water motion. When a liquid contacts a solid surface, an electrical
double layer (EDL) is always formed at the solid/liquid interface.
By modulating the EDL, the active transducer could generate a peak
voltage of ∼3 V and a peak power of ∼5 μW. Interestingly,
there were specific salinities of solution droplets that showed maximum
performance and different characteristics according to the ions’
nature. Analyzing the results macroscopically, we tried to figure
out the origins of the active transducing precipitated by ions dynamics.
Also, we demonstrated the scale-up potential for practical usage by
multiple electrode design.