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Improvement of CO Tolerance of Proton Exchange Membrane Fuel Cell (PEMFC) by an Air-Bleeding Technique

[+] Author Affiliations
Chen-Chung Chung, Chiun-Hsun Chen

National Chiao Tung University, Hsinchu, Taiwan, R.O.C.

Hsiang-Hui Lin, Yi-Yie Yan

Industrial Technology Research Institute

Paper No. FUELCELL2005-74009, pp. 215-221; 7 pages
doi:10.1115/FUELCELL2005-74009
From:
  • ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology
  • 3rd International Conference on Fuel Cell Science, Engineering and Technology
  • Ypsilanti, Michigan, USA, May 23–25, 2005
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-3764-5 | eISBN: 0-7918-3757-2
  • Copyright © 2005 by ASME

abstract

The investigation studies improving PEMFC carbon monoxide by a periodic air dosing. The carbon monoxide in the fuel gas leads to a significant loss in power density due to CO poisoning in the anode. The method involves bleeding air into the anode fuel stream (H2 -CO), which contains CO in various concentrations (20, 52.7, 100 ppm). In the transient CO poisoning test, air-bleeding is performed for four different periodic air dosing and cell voltage is fixed at 0.6 V. The result of a dosing of air during 10 sec in intervals of 10 sec is similar to that of continuous air-bleeding except 100 ppm CO. The CO tolerance of the fuel cell and cell performance recovery from poisoning can be improved by air-bleeding.

Copyright © 2005 by ASME

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