Abstract
Auto-humidified (or self humidifying) PEMFC operation with the channel-less, self-draining fuel cell is demonstrated from 25 to 115°C at 1 and 3 atm. Current densities of > 1 A/cm2 at 0.6 V is achieved at 95°C with dry feeds. Fuel cells designed with conventional serpentine flow channels were not able to operate with dry feeds at temperatures above 50-60°C. Design and operating requirements are presented for auto-humidified operation. The channel-less self-draining design offers substantial benefits for simplicity of operation and control including: the ability to self drain reducing flooding, the ability to uniformly disperse water removing current gradients and the ability to operate on dry feeds eliminating the need for humidifiers.
Original language | English (US) |
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Title of host publication | American Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers |
State | Published - Dec 1 2008 |
Event | 236th National Meeting and Exposition of the American Chemical Society, ACS 2008 - Philadelpia, PA, United States Duration: Aug 17 2008 → Aug 21 2008 |
Other
Other | 236th National Meeting and Exposition of the American Chemical Society, ACS 2008 |
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Country/Territory | United States |
City | Philadelpia, PA |
Period | 8/17/08 → 8/21/08 |
All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Chemical Engineering(all)