This study developed an eight-segmented fuel cell for investigating local current distribution and stability along channel with six-pass serpentine flow field. The stoichiometry of anode was 1.2 and cathode was 4 as the benchmark for comparison. When the stoichiometry flow rate of cathode was 4 and anode decreased to 1.05, which caused the hydrogen starvation on the downstream. The decrease of cathode stoichiometry from 4 to 2 resulted in less water diffusing to membrane and slight decrease of the conductivity on the gas-inlet segment. The cathode stoichiometry of 1.2 showed better performance than the stoichiometry of 2 at 8th segment. The reason is the hydration of membrane by water produced. When the fuel cell was operating under full humidity at 0.5V constant voltage, the current density would oscillate with time at different cathode stoichiometry. This result indicated that the location causes channel water flooding and draining alternately. The oscillation decreased at lower cathode stoichiometry.
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ASME 2009 7th International Conference on Fuel Cell Science, Engineering and Technology
June 8–10, 2009
Newport Beach, California, USA
Conference Sponsors:
- Advanced Energy Systems Division
ISBN:
978-0-7918-4881-4
PROCEEDINGS PAPER
Dependence of Gas Stoichiometry on the Uniformity and Stability of a Segmented Proton Exchange Membrane Fuel Cell Available to Purchase
Bo-Shian Jou,
Bo-Shian Jou
Yuan Ze University, Chung-Li, Tao Yuan, Taiwan
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Fang-Bor Weng,
Fang-Bor Weng
Yuan Ze University, Chung-Li, Tao Yuan, Taiwan
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Pei-Hung Chi,
Pei-Hung Chi
Yuan Ze University, Chung-Li, Tao Yuan, Taiwan
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Ay Su,
Ay Su
Yuan Ze University, Chung-Li, Tao Yuan, Taiwan
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Chun-Ying Hsu,
Chun-Ying Hsu
Yuan Ze University, Chung-Li, Tao Yuan, Taiwan
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Shih-Hung Chan
Shih-Hung Chan
Yuan Ze University, Chung-Li, Tao Yuan, Taiwan
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Bo-Shian Jou
Yuan Ze University, Chung-Li, Tao Yuan, Taiwan
Fang-Bor Weng
Yuan Ze University, Chung-Li, Tao Yuan, Taiwan
Pei-Hung Chi
Yuan Ze University, Chung-Li, Tao Yuan, Taiwan
Ay Su
Yuan Ze University, Chung-Li, Tao Yuan, Taiwan
Chun-Ying Hsu
Yuan Ze University, Chung-Li, Tao Yuan, Taiwan
Shih-Hung Chan
Yuan Ze University, Chung-Li, Tao Yuan, Taiwan
Paper No:
FuelCell2009-85009, pp. 1-7; 7 pages
Published Online:
February 17, 2010
Citation
Jou, B, Weng, F, Chi, P, Su, A, Hsu, C, & Chan, S. "Dependence of Gas Stoichiometry on the Uniformity and Stability of a Segmented Proton Exchange Membrane Fuel Cell." Proceedings of the ASME 2009 7th International Conference on Fuel Cell Science, Engineering and Technology. ASME 2009 7th International Conference on Fuel Cell Science, Engineering and Technology. Newport Beach, California, USA. June 8–10, 2009. pp. 1-7. ASME. https://doi.org/10.1115/FuelCell2009-85009
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