Effect of Mechanical Compression on Chemical Degradation of Nafion Membranes

Effect of Mechanical Compression on Chemical Degradation of Nafion Membranes

TitleEffect of Mechanical Compression on Chemical Degradation of Nafion Membranes
Publication TypeJournal Article
Year of Publication2014
AuthorsAhmet Kusoglu, Michelle Calabrese, Adam Z Weber
JournalECS Electrochemistry Letters
Volume3
Issue5
PaginationF33 - F36
Date Published01/2014
ISSN2162-8726
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 10 MPa. 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.

URLhttp://eel.ecsdl.org/content/3/5/F33.full.pdf
DOI10.1149/2.008405eel
Short TitleECS Electrochemistry Letters