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

Investigation of GDL degradation behaviour by half cell tests

Bauder, Alexander and Wagner, Norbert and Friedrich, Kaspar Andreas (2009) Investigation of GDL degradation behaviour by half cell tests. Autobrane Final Event, 2009-10-20 - 2009-10-21, Nabern, Germany.

Full text not available from this repository.

Abstract

The objective of this work is to investigate the wettability of gas diffusion layers (GDL) by electrochemical tests and to analyse the change of hydrophobicity due to degradation effects. The common GDL consists of conductive, hydrophilic (coal) and non conductive, hydrophobic (PTFE) components. The change of the ratio of conductive to non conductive area, which can be measured by wetting with liquid electrolyte in an electrochemical measurement setup induces a change of the electrochemical double layer capacitance (Fig. 1). Therefore measurements were performed with five different GDLs to determine the double layer capacitances. Four GDL samples were pre-treated by exposure at defined time in an autoclave (Fig. 2) at 130°C in 1 N sulphuric acid to enforce a degradation effect. One untreated GDL sample was used as reference.

Item URL in elib:https://elib.dlr.de/60530/
Document Type:Conference or Workshop Item (Poster)
Title:Investigation of GDL degradation behaviour by half cell tests
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Bauder, AlexanderUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wagner, NorbertUNSPECIFIEDhttps://orcid.org/0000-0002-2596-8689UNSPECIFIED
Friedrich, Kaspar AndreasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:October 2009
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Keywords:PEFC, GDL, CV, cyclic voltammetry, hydrophobicity, wettability
Event Title:Autobrane Final Event
Event Location:Nabern, Germany
Event Type:Other
Event Start Date:20 October 2009
Event End Date:21 October 2009
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion (old)
HGF - Program Themes:E EV - Energy process technology (old), E BZ - Fuel cells (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology, E BZ - Fuel cells
DLR - Research theme (Project):E - Elektrochemische Prozesse (old), E - Membran-Brennstoffzellen (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Bauder, Alexander
Deposited On:17 Dec 2009 11:06
Last Modified:24 Apr 2024 19:25

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.