Title: Improvement of CO tolerance of proton exchange membrane fuel cell (PEMFC) by an air-bleeding technique
Authors: Chung, Chen-Chung
Chen, Chiun-Hsun
Lin, Hsiang-Hui
Yan, Yi-Yie
機械工程學系
Department of Mechanical Engineering
Keywords: PEMFC;CO tolerance;periodic;Air bleeding
Issue Date: 2005
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 (H-2-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.
URI: http://hdl.handle.net/11536/17959
ISBN: 0-7918-3764-5
Journal: Proceedings of the 3rd International Conference on Fuel Cell Science, Engineering, and Technology
Begin Page: 215
End Page: 221
Appears in Collections:Conferences Paper