Effect of Mechanical Compression on Chemical Degradation of Nafion Membranes

Publication Type

Journal Article

Date Published

01/2014

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.

Journal

ECS Electrochemistry Letters

Volume

3

Year of Publication

2014

Short Title

ECS Electrochemistry Letters

Pagination

F33 - F36

Issue

5

ISSN

2162-8726