Characteristic studies of a PBI/H3PO4 high temperature membrane PEMFC under simulated reformate gases

Chen Yu Chen, Wei Hsiang Lai, Yi Kuang Chen, Siou Sheng Su

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


A high temperature proton exchange membrane fuel cell is considered a solution to improve the cell performance under CO-contained hydrogen and to simplify the gas purification process of a reformate fuel cell system. In this study, polybenzimidazole-based phosphoric acid-doped fuel cells are studied under simulated reformate gases of different H2, N2 and CO concentrations. The experimental results show that the dilution effect of N2 has a minor impact on the cell performance in absence of CO. However, the CO poisoning increases the charge transfer resistance and leads to a substantial performance drop. This work also reveals that increasing the operating temperature can effectively improve the CO tolerance by suppressing the Pt-CO binding reaction. In addition, the CO poisoning effect becomes more significant in diluted H2. As a result, the CO concentration should be maintained lower than a critical level to prevent a high CO coverage on the catalyst which leads to a noteworthy voltage shut-down, especially in highly diluted H2.

Original languageEnglish
Pages (from-to)13757-13762
Number of pages6
JournalInternational Journal of Hydrogen Energy
Issue number25
Publication statusPublished - 2014 Aug 22

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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