Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 14, 2015
Previous Article Next Article

Does thermal treatment merely make a H2O-saturated Nafion membrane lose its absorbed water at high temperature?

Author affiliations

Abstract

Investigating the dehydration process of a Nafion membrane helps to understand the mechanism of the decrease in its proton conductivity under high-temperature and low-humidity conditions. Herein, the influence of thermal treatment on a H2O-saturated Nafion membrane was in situ studied by FTIR spectroscopy. With the aid of generalized two-dimensional correlation spectroscopy (2Dcos), the microstructural changes during the thermal treatment were discussed in detail. In short, side-chain regions first lost H2O, followed by the H2O loss in ionic cluster domains. It resulted in shrunken ionic channels in the Nafion membrane, which exhibited a negative influence on its proton conduction. The immediate aftermath was the crystallization of amorphous backbone regions. All these results were confirmed by TGA and XRD techniques, and the 2Dcos method was first applied in TGA and XRD results in this field.

Graphical abstract: Does thermal treatment merely make a H2O-saturated Nafion membrane lose its absorbed water at high temperature?

Back to tab navigation

Supplementary files

Article information


Submitted
14 Jan 2015
Accepted
02 Mar 2015
First published
03 Mar 2015

Phys. Chem. Chem. Phys., 2015,17, 9106-9115
Article type
Paper

Does thermal treatment merely make a H2O-saturated Nafion membrane lose its absorbed water at high temperature?

K. Feng, L. Hou, B. Tang and P. Wu, Phys. Chem. Chem. Phys., 2015, 17, 9106
DOI: 10.1039/C5CP00203F

Social activity

Search articles by author

Spotlight

Advertisements