Physical degradation of MEA in PEM fuel cell by on/off operation under nitrogen atmosphere

Dongho Seo, Sangsun Park, Yukwon Jeon, Sung Won Choi, Yong Gun Shul

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The durability of PEMFCs is one of the most important issues for application in automotive vehicles with a repeated start-up and shut-down system. The understanding of degradation phenomena such as causes, mechanisms and influence of working condition is essential to improving the performance and lifetime of PEMFC. We conducted on/off cyclic operation in a single cell configuration with ultra purity nitrogen gas to investigate the physical degradation of membrane electrode assembly (MEA). After on/off cycle operation for 100,000 cycles under different humid condition, the characteristics of the MEAs were examined by in situ and ex situ analyses techniques. The physical degradation of MEA by on/off cycling led to a change in the membrane-electrode interfacial structure, which is mainly attributed to the loss of cell performance.

Original languageEnglish
Pages (from-to)104-109
Number of pages6
JournalKorean Journal of Chemical Engineering
Issue number1
Publication statusPublished - 2010 Jan

Bibliographical note

Funding Information:
This work was supported by Brain Korea 21 and the fostering project of the Specialized Graduate School of Hydrogen & Fuel Cell supported financially by the Ministry of Commerce Industry and Energy (MOCIE).

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)


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