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Nanoscale Investigation of Nafion Membranes after Artificial Degradation

Friedrich, K. Andreas and Schulze, Mathias and Bauder, Alexander and Hiesgen, Renate and Wehl, Ines and Yuan, Xiao-Zi and Wang, Haijiang (2009) Nanoscale Investigation of Nafion Membranes after Artificial Degradation. ECS Transactions, 25 (1), pp. 395-403. Electrochemical Society, Inc.. DOI: 10.1149/1.3210589

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In this contribution we report on the nanostructure and conductivity of freshly prepared as well as artificially degraded Nafion membranes investigated by contact atomic force microscopy (AFM),conductive AFM, and pulsed force-mode (PFM)-AFM. The different techniques can provide complementary information on structure and conductivity. Conductive AFM gives information about the internal structure of ionic clusters during current flow. High resolution current images of the membrane were used to directly compare the measured nanostructure of the single conductive channels with model predictions from the literature. The influence of H2O2 treatment as a method for artificial degradation is investigated. The analysis of adhesion forces demonstrates a significant change of thesurface properties with different membrane treatment. Topography and adhesion measurements clearly show materials changes with high resolution and correlate with changes in conductivity distributions.

Item URL in elib:https://elib.dlr.de/60678/
Document Type:Article
Title:Nanoscale Investigation of Nafion Membranes after Artificial Degradation
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Schulze, Mathiasmathias.schulze (at) dlr.deUNSPECIFIED
Bauder, Alexanderalexander.bauder (at) dlr.deUNSPECIFIED
Hiesgen, RenateHochschule EsslingenUNSPECIFIED
Wehl, InesHochschule EsslingenUNSPECIFIED
Yuan, Xiao-ZiNational Research CouncilUNSPECIFIED
Wang, HaijiangNational Research CouncilUNSPECIFIED
Date:November 2009
Journal or Publication Title:ECS Transactions
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1149/1.3210589
Page Range:pp. 395-403
Publisher:Electrochemical Society, Inc.
Keywords:Polymer Electrolyte fuel Cell Membrane Degradation Nafion
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion (old)
HGF - Program Themes:E BZ - Fuel cells (old)
DLR - Research area:Energy
DLR - Program:E BZ - Fuel cells
DLR - Research theme (Project):E - Membran-Brennstoffzellen (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Friedrich, Prof.Dr. Kaspar Andreas
Deposited On:10 Nov 2009 14:42
Last Modified:06 Sep 2019 15:24

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