Electrochemical aspects of interconnect materials in PEMFCs

Saman Khosravi H*, Qamar Abbas, Klaus Reichmann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Proton Exchange Membrane Fuel Cell (PEMFC) is one of the promising technologies for generating electricity due to high energy density, environmental friendliness, and the absence of noise and pollution. However, under harsh acidic conditions, metal-based PEMFC interconnector (PEMFCMI) may induce degradation and gradual deterioration of the PEMFC stack leading to a decreased output voltage. Literature review shows that several types of stainless steel interconnect can be promising materials for commercial PEMFCs. Various surface modification techniques and different types of protective coatings have been applied on PEMFCMI. Although these surface modification methods and coatings improve resistance towards electrochemical degradation, still some weaknesses such as low electrical conductivity, stability, and high cost have limited their industrial viability. In this review, the PEMFC in general and the protective passive layers formed on interconnects in particular, have been discussed while keeping in view their electrochemical degradation mechanisms.

Original languageEnglish
Pages (from-to)35420-35447
Number of pages28
JournalInternational Journal of Hydrogen Energy
Issue number71
Publication statusPublished - 14 Oct 2021


  • Electrical conductivity
  • Electrochemical degradation
  • Interconnect
  • Thin-film

ASJC Scopus subject areas

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

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