Performance enhancements of PEM fuel cells with narrower outlet channels in interdigitated flow field

Xuyang Zhang, Shizhong Chen, Zhongxian Xia, Xu Zhang, Hongtan Liu

Research output: Contribution to journalConference articlepeer-review

7 Scopus citations


Proton exchange membrane (PEM) fuel cell is a promising renewable energy conversion technology due to its many unique advantages. Among its multiple components, flow field plays an important role in distributing reactants from flow channels to electrochemical reaction sites in catalyst layers (CL).Furthermore, since the reactions only occur at the triple-phase boundary regions where electrons, protons and reactants meet, the transport of oxygen affects the electrochemical active area (ECA) available for reaction. Interdigitated flow fields have been shown to be very effective in transporting reactants to the reaction sites in the CL. In this work, interdigitated flow fields with different outlet channel widths are employed to examine their effects on the cell performance and ECA. Experimental results show that with narrower outlet channels both the ECA and the cell performance increase significantly, at the expense of slight increase in the ohmic resistance.

Original languageEnglish (US)
Pages (from-to)1412-1417
Number of pages6
JournalEnergy Procedia
StatePublished - 2019
Event10th International Conference on Applied Energy, ICAE 2018 - Hong Kong, China
Duration: Aug 22 2018Aug 25 2018


  • Channel Width
  • ECA
  • Flow Field
  • PEM Fuel Cell

ASJC Scopus subject areas

  • Energy(all)


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