Improvement of CO tolerance of proton exchange membrane fuel cell by an air-bleeding technique

Chiun-Hsun Chen*, Chen Chung Chung, Hsiang Hui Lin, Yi Yie Yan

*Corresponding author for this work

Research output: Contribution to journalArticle

16 Scopus citations

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 (H2-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.

Original languageEnglish
Article number014501
JournalJournal of Fuel Cell Science and Technology
Volume5
Issue number1
DOIs
StatePublished - 1 Feb 2008

Keywords

  • Air bleeding
  • CO tolerance
  • PEMFC
  • Periodic

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