Utilizing a Segmented Fuel Cell to Study the Effects of Electrode Coating Irregularities on PEM Fuel Cell Initial Performance

Guido Bender, Michael Ulsh, Jason Porter, Adam Phillips

Research output: Contribution to journalArticlepeer-review

26 Scopus Citations

Abstract

An understanding of the impact of coating irregularities on beginning of life polymer electrolyte fuel cell (PEMFC) performance is essential to develop and establish manufacturing tolerances for its components. Coating irregularities occurring in the fuel cell electrode can either possess acceptable process variations or potentially harmful defects. A segmented fuel cell (SFC) is employed to understand how 100% catalyst reduction irregularities ranging from 0.125 to 1 cm2 in the cathode electrode of a 50 cm2 sized cell impact spatial and total cell performance at dry and wet humidification conditions. By analyzing the data in a differential format the local performance effects of irregularity sizes down to 0.25 cm2 were detected in the current distribution of the cell. Slight total cell performance impacts, due to irregularity sizes of 0.5 and 1 cm2, were observed under dry operation and high current densities.

Original languageAmerican English
Pages (from-to)288-298
Number of pages11
JournalFuel Cells
Volume17
Issue number3
DOIs
StatePublished - 2017

Bibliographical note

Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

NREL Publication Number

  • NREL/JA-5900-67416

Keywords

  • Coating Irregularity
  • Current Distribution
  • Defect
  • Manufacturing
  • PEMFC
  • Segmented Cell
  • Spatial Performance

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