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  4. Work function and catalytic activity measurements of an IrO2 film deposited on YSZ subjected to in situ electrochemical promotion
 
research article

Work function and catalytic activity measurements of an IrO2 film deposited on YSZ subjected to in situ electrochemical promotion

Tsiplakides, D.
•
Nicole, J.
•
Vayenas, C. G.
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1998
Journal of the Electrochemical Society

In order to investigate the origin of the effect of non faradaic electrochem. modification of catalytic activity (NEMCA), a Kelvin probe was used to measure in situ the changes induced in the work function of an IrO2 catalyst film deposited on yttria-stabilized zirconia upon electrochem. supply of O2- to the catalyst under reaction conditions. Ethylene oxidn. was chosen as a model reaction system. For this purpose an electrochem. reactor of novel design was used in which work function measurements could be carried out in situ during kinetic measurements. It was found that the changes in catalyst work function equal to changes in catalyst ohmic-drop-free potential and that the reaction rate depends exponentially on catalyst work function at low applied potentials. [on SciFinder (R)]

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Type
research article
DOI
10.1149/1.1838365
Web of Science ID

WOS:000072258100036

Author(s)
Tsiplakides, D.
Nicole, J.
Vayenas, C. G.
Comninellis, Ch  
Date Issued

1998

Published in
Journal of the Electrochemical Society
Volume

145

Issue

3

Start page

905

End page

908

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
GGEC  
Available on Infoscience
February 22, 2006
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/225337
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