Title: Improvement of CO tolerance of proton exchange membrane fuel cell by an air-bleeding technique
Authors: Chen, Chiun-Hsun
Chung, Chen-Chung
Lin, Hsiang-Hui
Yan, Yi-Yie
機械工程學系
Department of Mechanical Engineering
Keywords: air bleeding;CO tolerance;PEMFC;periodic
Issue Date: 1-Feb-2008
Abstract: This study investigates the improvement of proton exchange membrane fuel cell (PEMFC) carbon monoxide by 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 (H(2)-CO), which contains CO in various concentrations (20 ppm, 52.7 ppm, and 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 for 10 s in intervals of 10 s is similar to that of continuous air bleeding except for 100 ppm CO. The CO tolerance of the fuel cell and cell performance recovery from poisoning can be improved by air bleeding.
URI: http://dx.doi.org/10.1115/1.2784278
http://hdl.handle.net/11536/30264
ISSN: 1550-624X
DOI: 10.1115/1.2784278
Journal: JOURNAL OF FUEL CELL SCIENCE AND TECHNOLOGY
Volume: 5
Issue: 1
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Appears in Collections:Conferences Paper