Investigation of Cell Operation Conditions for Co Tolerance Improvement of PEMFC

燃料電池操作條件對一氧化碳容忍度之改善研究

鍾振忠(Chen-Chung Chung) ； 陳俊勳(Chiun-Hsun Chen) ； 翁德正(Der-Cheng Weng) ； 嚴貽乙(Yi-Yie Yan) ； 林祥輝(Hsiang-Hui Lin)

《中國機械工程學刊》 28卷6期 (2007/12) Pp. 563-569

https://doi.org/10.29979/JCSME.200712.0002

摘要

本篇論文探討在不同的操作條件下，一氧化碳毒化燃料電池性能的變化。一為固定電池電壓而另一為固定電池電流密度。進行一氧化碳毒化實驗時發現電池性能會隨著時間而下降，當固定電壓進行一氧化碳毒化實驗，雖然改變不同固定的電壓但毒化狀態卻大致相同，相反地，當固定電流密度時，電池在特定一氧化碳濃度(52.7 ppm)時，性能有較好的回復率。

並列摘要

The investigation is to experimentally study the transient CO poisoning test with different cell operation conditions. One is fixing the cell voltage and the other is fixing the current density. In the former condition, the voltages are fixed at 0.5, 0.6, 0.7V, respectively, whereas the current densities are fixed at 600, 1000, 1200 mA/cm^2, respectively, in the latter one. In the transient poisoning test, the cell performance will be declined with time. The poisoned polarization curves are determined as soon as the performance subjected to CO poisoning reaches a steady state. Then, it will determine which one has a better performance in CO poisoning test and find out the difference between these two methods. With fixed cell voltage to perform transient CO poisoning test, it indicates that changing cell voltage cannot transform the stable poisoned polarization behaviors, whereas with fixed current density, it can get a better recovery performance at a fixed CO concentration (52.7 ppm).

並列關鍵字

CO tolerance ； PEMFC