Electrokinetic Power Generation via Streaming Potentials in Microchannels: A Mobile-Ion-Drain Method to Increase Streaming Potentials
MEMS, NANO, and Smart Systems, International Conference on (2004)
Banff, Alberta, Canada
Aug. 25, 2004 to Aug. 27, 2004
Jun Yang , University of Alberta
Fuzhi Lu , University of Alberta
Larry W. Kostiuk , University of Alberta
Daniel Y. Kwok , University of Alberta
We show, by natural occurring phenomena of charge separation near the solid-liquid interface in microchannels, that electricity can be generated by forcing water through a ceramic rod with no moving part and emission. A single hand push on a syringe is our source of power which easily generates a streaming potential of over 20 V and 30 ?A. By means of streaming potentials, two capacitors were charged and discharged alternatively to light-up two Light-Emitting-Diodes in every ten seconds. From our specific choice of liquid/solid pair, an efficiency of 0.8% was obtained. A mobile-ion-drain method is also demonstrated to increase the streaming potential.
F. Lu, L. W. Kostiuk, J. Yang and D. Y. Kwok, "Electrokinetic Power Generation via Streaming Potentials in Microchannels: A Mobile-Ion-Drain Method to Increase Streaming Potentials," International Conference on MEMS, NANO and Smart Systems(ICMENS), Banff, AB, Canada, 2004, pp. 675-679.