Electrokinetic Power Generation via Streaming Potentials in Microchannels: A Mobile-Ion-Drain Method to Increase Streaming Potentials

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 st...

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Bibliographic Details
Main Authors: Jun Yang, Fuzhi Lu, Kostiuk, L.W., Daniel Y. Kwok
Format: Conference Proceeding
Language:English
Subjects:
Ceramics
Electrokinetics
Fluid flow
Laboratories
Mechanical engineering
Microchannel
Power engineering and energy
Power generation
Solids
Voltage
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Summary: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 µA. 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.
DOI:10.1109/ICMENS.2004.1509037