Indiana University-Purdue University Indianapolis (IUPUI) / An integrated micro PEM fuel cell system with self-regulated hydrogen generation
from ammonia borane is reported to power portable electronics. Hydrogen is generated
via catalytic hydrolysis reaction of ammonia borane solution in microchannels
with nanoporous platinum catalyst electroplated inside the microchannels. The self-regulation of the ammonia borane solution is 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 device is fabricated
on combination of polystyrene sheets cut by graphic cutter, a stainless steel layer
cut using wire electrical discharge machining and bonding layers with double-sided
polyimide tape. Due to the seamless bonding between the hydrogen generator and
the micro fuel cell, the dead volume in the gas connection loops can be significantly
reduced and the response time of self-regulation is reduced.
| Identifer | oai:union.ndltd.org:IUPUI/oai:scholarworks.iupui.edu:1805/7970 |
| Date | 08 1900 |
| Creators | Zamani Farahani, Mahmoud Reza |
| Contributors | Zhu, Likun |
| Source Sets | Indiana University-Purdue University Indianapolis |
| Language | en_US |
| Detected Language | English |
| Type | Thesis |
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