Investigation of MEA degradation in PEM fuel cell by on/off cyclic operation under different humid conditions

Dongho Seo, Junghyun Lee, Sangsun Park, Junki Rhee, Sung Won Choi, Yong-Gun Shul

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The durability of PEM fuel cells as a function of different humid conditions and MEA degradation were investigated by on/off cyclic operation. The maximum numbers of cycles determined by cycle at 10% of cell voltage loss were 1980, 1650, 1100, 520, and 320 cycles at relative humidity (RH) of 1000, 80, 50, 30, and 10%, respectively. The increases of ohmic resistance were observed at the high humid conditions of RH 100 and 80%. On the other hand, the charge transfer resistance increased at low humid conditions of RH 50, 30, and 10%. The losses of electrochemical surface area were obtained about 21% and 7% under RH 50 and 30% after the on/off cyclic operations, respectively. The thickness of electrode was reduced in the both anode and cathode layer, indicating that carbon corrosion occurred during on/off cycling. At cathode layer, the growth and migration platinum particles into polymer electrolyte were detected by XRD and TEM analyses.

Original languageEnglish
Pages (from-to)1828-1836
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume36
Issue number2
DOIs
Publication statusPublished - 2011 Jan 1

Fingerprint

fuel cells
humidity
Fuel cells
Atmospheric humidity
degradation
Degradation
cycles
Cathodes
cathodes
Acoustic impedance
durability
Charge transfer
Platinum
corrosion
Anodes
Durability
platinum
anodes
Electrolytes
charge transfer

All Science Journal Classification (ASJC) codes

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

Cite this

Seo, Dongho ; Lee, Junghyun ; Park, Sangsun ; Rhee, Junki ; Choi, Sung Won ; Shul, Yong-Gun. / Investigation of MEA degradation in PEM fuel cell by on/off cyclic operation under different humid conditions. In: International Journal of Hydrogen Energy. 2011 ; Vol. 36, No. 2. pp. 1828-1836.
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abstract = "The durability of PEM fuel cells as a function of different humid conditions and MEA degradation were investigated by on/off cyclic operation. The maximum numbers of cycles determined by cycle at 10{\%} of cell voltage loss were 1980, 1650, 1100, 520, and 320 cycles at relative humidity (RH) of 1000, 80, 50, 30, and 10{\%}, respectively. The increases of ohmic resistance were observed at the high humid conditions of RH 100 and 80{\%}. On the other hand, the charge transfer resistance increased at low humid conditions of RH 50, 30, and 10{\%}. The losses of electrochemical surface area were obtained about 21{\%} and 7{\%} under RH 50 and 30{\%} after the on/off cyclic operations, respectively. The thickness of electrode was reduced in the both anode and cathode layer, indicating that carbon corrosion occurred during on/off cycling. At cathode layer, the growth and migration platinum particles into polymer electrolyte were detected by XRD and TEM analyses.",
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Investigation of MEA degradation in PEM fuel cell by on/off cyclic operation under different humid conditions. / Seo, Dongho; Lee, Junghyun; Park, Sangsun; Rhee, Junki; Choi, Sung Won; Shul, Yong-Gun.

In: International Journal of Hydrogen Energy, Vol. 36, No. 2, 01.01.2011, p. 1828-1836.

Research output: Contribution to journalArticle

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