Development of a PEM stack and performance analysis including the effects of water content in the membrane and cooling method Academic Article uri icon

abstract

  • For the use of proton exchange membrane (PEM) fuel cell systems to become widespread, the components required to build one should be minimized. Because a PEM fuel cell has a limited operating temperature range, it requires some kind of cooling method. In this study, different cooling methods were investigated experimentally. A PEM fuel cell stack with an active area of 100 cm2 and 8 cells in series was developed and used in this research. When 50% relative humidity inlet gases were supplied (at 15 A of current discharge and 70 C), cell temperatures at the center increased from around 60 C to 85 C, and cell voltage dropped from 4.8 V to 3.2 V because of membrane drying (insufficient cooling). When fully hydrated inlet gases (100% relative humidity) were supplied to the PEM stack at the same test conditions, the cell temperature remained around 65 C, and stack voltage remained around 5.7 V at 15 A of current discharge. Fully hydrated inlet gases play a positive role both for water transport (when the proton moves from the anode to the cathode) and to maintain the fuel cell stack temperature to prevent stack drying. 2008 Elsevier B.V. All rights reserved.

published proceedings

  • Journal of Power Sources

altmetric score

  • 3

author list (cited authors)

  • Park, Y. H., & Caton, J. A.

citation count

  • 40

complete list of authors

  • Park, Yong Hun||Caton, Jerald A

publication date

  • May 2008