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Structure and Local Reactivity of Supported Catalyst/Nafion® Layers studied by in-situ STM

Hiesgen, Renate and Eberhardt, Dirk and Alexandrova, Elena and Friedrich, K. Andreas (2006) Structure and Local Reactivity of Supported Catalyst/Nafion® Layers studied by in-situ STM. FUEL CELLS 06 (6), pp. 425-431. WILEY-VCH Verlag GmbH & Co. KGaG, Weinheim. DOI: 10.1002/fuce.200600029

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Official URL: http://www3.interscience.wiley.com/cgi-bin/jhome/84502986

Abstract

The electrodes are crucial components for fuel cells, since this is where the electrochemical reactions take place. In order to provide an insight into the structure/activity relationships of the rather complex electrodes, a high-resolution measuring technique, based on a scanning tunneling microscope operating in an electrochemical cell, has been developed. The structure of the electrode surface can be imaged from the microscale to the nanoscale, under conditions quite close to those in a working fuel cell. The relative reactivity is measured by using the STM tip as a sensor electrode for the ORR. Here, the first results of the surface structure of the electrode materials are presented, as well as measurements of the local reduction current, related to the oxygen reduction reaction, giving a relative measure for the local reactivity.

Item URL in elib:https://elib.dlr.de/46435/
Document Type:Article
Title:Structure and Local Reactivity of Supported Catalyst/Nafion® Layers studied by in-situ STM
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hiesgen, RenateFachhochschule EsslingenUNSPECIFIED
Eberhardt, DirkFachhochschule EsslingenUNSPECIFIED
Alexandrova, ElenaUniversität StuttgartUNSPECIFIED
Friedrich, K. AndreasUNSPECIFIEDUNSPECIFIED
Date:December 2006
Journal or Publication Title:FUEL CELLS 06
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.1002/fuce.200600029
Page Range:pp. 425-431
Publisher:WILEY-VCH Verlag GmbH & Co. KGaG, Weinheim
Status:Published
Keywords:ECSTM, Fuel Cell, Oxygen Reduction Reaction, 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:23 Jan 2007
Last Modified:12 Dec 2013 20:22

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