Analysis of Cell to Cell Voltage Variations in a 4-cell and 25- Cell Low Temperature PEM Stacks

Authors

  • Etim U Ubong Author
  • Kishore Asokan Author
  • Uwem U. Ubong Author
  • Ini U. Ubong Author

DOI:

https://doi.org/10.24084/repqj14.544

Keywords:

Cell to cell voltage variations, Low temperature PEM, SERC-4 and Ballard 25 cell stacks

Abstract

An experimental study of cell to cell voltage variations on two different low temperature (LT) PEM stacks is presented. One is a‐4 cell‐membrane‐humidified stack. The second is a‐25 cell stack with an external humidifier. The test results taken from open circuit voltage to full load reveal that in both stacks, the first cell almost always produced the least voltage. Further tests at additional two levels of air stoichiometry (Sair) with the 4‐cell stack confirmed the previous observations. An analysis is conducted to unravel the influence of various factors on cell to cell voltage variations. Limitations of this investigation are noted and future work is suggested.

Author Biographies

  • Etim U Ubong

    Center for Fuel Cell Systems Research & Powertrain Integrations 
    Kettering University 
    1700 University Avenue, Flint, MI 48504, USA.

  • Kishore Asokan

    Center for Fuel Cell Systems Research & Powertrain Integrations 
    Kettering University 
    1700 University Avenue, Flint, MI 48504, USA. 

  • Uwem U. Ubong

    Department of Chemistry. Akwa Ibom State University. Nigeria

  • Ini U. Ubong

    Institute of Pollution Studies. Rivers State University of Science and Tech.  Port Harcourt.
      Rivers State. Nigeria

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Published

2024-01-16

Issue

Vol. 14 No. 8 (2016)

Section

Articles