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Electrocatalyis for PEFCs: Oxygen Reduction on Nanoparticles and Extended Surfaces

Published online by Cambridge University Press:  25 January 2013

Thomas J. Schmidt ,
Annett Rabis ,
Bernhard Schwanitz  and
Günther G. Scherer
Thomas J. Schmidt
Affiliation:
Electrochemistry Laboratory, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
Annett Rabis
Affiliation:
Electrochemistry Laboratory, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
Bernhard Schwanitz
Affiliation:
Electrochemistry Laboratory, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
Günther G. Scherer
Affiliation:
Electrochemistry Laboratory, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
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Abstract

This work makes an attempt to correlate experimentally observed Tafel slopes from the oxygen reduction reaction in both model rotating disk electrode and polymer electrolyte fuel cell measurements, respectively, with the kinetic description of a coverage dependent current-potential relationship. It is shown that the potential dependent OHad coverage can be used as a descriptor of potential dependent Tafel slopes, pointing to the validity of underlying Temkin-Frumkin adsorption properties in combination with the Butler-Volmer approach.

Keywords

sputteringsurface chemistryenergy generation
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1491: Symposium C – Electrocatalysis and Interfacial Electrochemistry for Energy Conversion and Storage , 2013 , mrsf12-1491-c09-04
Copyright
Copyright © Materials Research Society 2013

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References

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