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 |