An integrated microfluidic self-regulating and self-circulating hydrogen generator for fuel cells
Document Type
Conference Proceeding
Publication Date
12-11-2009
Abstract
This paper introduces a micro-hydrogen generator with self-circulation and self-regulation mechanisms for delivering alkaline sodium borohydride solution without parasitic power consumption. The self-circulation of the sodium borohydride solution was achieved by using directional growth and selective venting of hydrogen bubbles in microchannels, which leads to agitation and addition of fresh solution without power consumption. The pumping rate can be automatically regulated by the pressure at the gas outlet, which directly corresponds to the current output of the fuel cell, and thus the electrical load. Design, fabrication, and testing results of a prototype system are described. A maximum hydrogen generation rate of 0.5 sccm and self-circulation/self-regulation mechanisms have been demonstrated in this paper. ©2009 IEEE.
Publication Title
TRANSDUCERS 2009 - 15th International Conference on Solid-State Sensors, Actuators and Microsystems
Recommended Citation
Zhu, L.,
Meng, D.,
Kroodsma, N.,
Yeom, J.,
&
Shannon, M.
(2009).
An integrated microfluidic self-regulating and self-circulating hydrogen generator for fuel cells.
TRANSDUCERS 2009 - 15th International Conference on Solid-State Sensors, Actuators and Microsystems, 652-655.
http://doi.org/10.1109/SENSOR.2009.5285409
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/10916