Effect of mechanical compression on chemical degradation of Nafion membranes

Ahmet Kusoglu, Michelle Calabrese, Adam Z. Weber

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

The effect of compression on the chemical degradation of Nafion is investigated. Results indicate a nonlinear dependence of chemical degradation on compression level, with a slight decrease at 1 MPa and then increase up to 10MPa. The results confirm the synergistic nature of mechanical effects on chemical fuel-cell membrane degradation, which are expected to occur in operando. The impact of compression is also shown to change the nano-domain structure, consistent with the increase in chemical decomposition. Thus, deformation energy accumulated in the membrane due to mechanical loads seemingly accelerates the chemical reactions driving the decomposition of the polymer membrane.

Original languageEnglish (US)
Pages (from-to)F33-F36
JournalECS Electrochemistry Letters
Volume3
Issue number5
DOIs
StatePublished - 2014
Externally publishedYes

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