elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Local Impact of Pt Nanodeposits on Ionomer Decomposition in Polymer Electrolyte Membranes

Helmly, Stefan and Eslamibidgoli, Mohammad and Friedrich, K. Andreas and Eikerling, Michael (2017) Local Impact of Pt Nanodeposits on Ionomer Decomposition in Polymer Electrolyte Membranes. Electrocatalysis, 8 (6), pp. 501-508. Springer. DOI: 10.1007/s12678-017-0353-2 ISSN 1868-2529

[img] PDF - Registered users only until 2020
1MB

Abstract

Based on recent theoretical studies, we designed a multistep experimental protocol to understand the impact of environmental conditions around Pt nanodeposits on Membrane chemical degradation. The first experiment probes the local potential at a Pt microelectrode for different rates of permeation of hydrogen and oxygen gases from anode and cathode side. The subsequent degradation experiment utilizes the local conditions taken from the first experiment to analyze local rates of ionomer degradation. The rate of ionomer decomposition is significantly enhanced in the anodic H2-rich membrane region, which can be explained with the markedly increased amount of H2O2 formation at Pt nanodeposits in this region.

Item URL in elib:https://elib.dlr.de/117099/
Document Type:Article
Title:Local Impact of Pt Nanodeposits on Ionomer Decomposition in Polymer Electrolyte Membranes
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Helmly, Stefanstefan.helmly (at) dlr.deUNSPECIFIED
Eslamibidgoli, MohammadSimon Fraser University, CanadaUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.dehttps://orcid.org/0000-0002-2968-5029
Eikerling, MichaelSimon Fraser University; CanadaUNSPECIFIED
Date:February 2017
Journal or Publication Title:Electrocatalysis
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:8
DOI :10.1007/s12678-017-0353-2
Page Range:pp. 501-508
Publisher:Springer
ISSN:1868-2529
Status:Published
Keywords:Ionomer decomposition Pt in the Membrane Hydrogen peroxide Formation Local reaction conditions
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - NGC Fahrzeugkonzepte (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Friedrich, Prof.Dr. Kaspar Andreas
Deposited On:21 Dec 2017 15:57
Last Modified:21 Dec 2017 15:57

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.