Mapping electrochemically driven gas exchange of mixed conducting SrTi(0.7)Fe(0.3)O(3 − δ) and Ce(0.8)Gd(0.2)O(1.9) thin films by (18)O tracer incorporation under reducing atmosphere

Thermally and electrochemically driven (18)O tracer exchange experiments in H(2)/H(2)(18)O atmosphere were performed on SrTi(0.7)Fe(0.3)O(3 − δ) and Ce(0.8)Gd(0.2)O(2 − δ) thin films on single crystalline YSZ substrates. Noble metal current collectors were deposited on both films and electrochemical...

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Detalles Bibliográficos
Autores principales: Nenning, Andreas, Navickas, Edvinas, Velicsanyi, Peter, Opitz, Alexander K., Hutter, Herbert, Fleig, Jürgen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier Science B.V 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4986286/
https://www.ncbi.nlm.nih.gov/pubmed/27570332
http://dx.doi.org/10.1016/j.ssi.2014.10.024
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author Nenning, Andreas
Navickas, Edvinas
Velicsanyi, Peter
Opitz, Alexander K.
Hutter, Herbert
Fleig, Jürgen
author_facet Nenning, Andreas
Navickas, Edvinas
Velicsanyi, Peter
Opitz, Alexander K.
Hutter, Herbert
Fleig, Jürgen
author_sort Nenning, Andreas
collection PubMed
description Thermally and electrochemically driven (18)O tracer exchange experiments in H(2)/H(2)(18)O atmosphere were performed on SrTi(0.7)Fe(0.3)O(3 − δ) and Ce(0.8)Gd(0.2)O(2 − δ) thin films on single crystalline YSZ substrates. Noble metal current collectors were deposited on both films and electrochemically polarized during the exchange experiment. The resulting tracer distribution was analyzed by spatially resolved secondary ion mass spectrometry. Increased tracer fraction near the current collectors was found under cathodic polarization and decreased tracer fraction under anodic polarization. High cathodic bias leads to enhanced n-type electronic conductivity, which increases the extent of the electrochemically active zone.
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spelling pubmed-49862862016-08-25 Mapping electrochemically driven gas exchange of mixed conducting SrTi(0.7)Fe(0.3)O(3 − δ) and Ce(0.8)Gd(0.2)O(1.9) thin films by (18)O tracer incorporation under reducing atmosphere Nenning, Andreas Navickas, Edvinas Velicsanyi, Peter Opitz, Alexander K. Hutter, Herbert Fleig, Jürgen Solid State Ion Article Thermally and electrochemically driven (18)O tracer exchange experiments in H(2)/H(2)(18)O atmosphere were performed on SrTi(0.7)Fe(0.3)O(3 − δ) and Ce(0.8)Gd(0.2)O(2 − δ) thin films on single crystalline YSZ substrates. Noble metal current collectors were deposited on both films and electrochemically polarized during the exchange experiment. The resulting tracer distribution was analyzed by spatially resolved secondary ion mass spectrometry. Increased tracer fraction near the current collectors was found under cathodic polarization and decreased tracer fraction under anodic polarization. High cathodic bias leads to enhanced n-type electronic conductivity, which increases the extent of the electrochemically active zone. Elsevier Science B.V 2015-05 /pmc/articles/PMC4986286/ /pubmed/27570332 http://dx.doi.org/10.1016/j.ssi.2014.10.024 Text en © 2014 The Authors. Published by Elsevier B.V. http://creativecommons.org/licenses/by/3.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Nenning, Andreas
Navickas, Edvinas
Velicsanyi, Peter
Opitz, Alexander K.
Hutter, Herbert
Fleig, Jürgen
Mapping electrochemically driven gas exchange of mixed conducting SrTi(0.7)Fe(0.3)O(3 − δ) and Ce(0.8)Gd(0.2)O(1.9) thin films by (18)O tracer incorporation under reducing atmosphere
title Mapping electrochemically driven gas exchange of mixed conducting SrTi(0.7)Fe(0.3)O(3 − δ) and Ce(0.8)Gd(0.2)O(1.9) thin films by (18)O tracer incorporation under reducing atmosphere
title_full Mapping electrochemically driven gas exchange of mixed conducting SrTi(0.7)Fe(0.3)O(3 − δ) and Ce(0.8)Gd(0.2)O(1.9) thin films by (18)O tracer incorporation under reducing atmosphere
title_fullStr Mapping electrochemically driven gas exchange of mixed conducting SrTi(0.7)Fe(0.3)O(3 − δ) and Ce(0.8)Gd(0.2)O(1.9) thin films by (18)O tracer incorporation under reducing atmosphere
title_full_unstemmed Mapping electrochemically driven gas exchange of mixed conducting SrTi(0.7)Fe(0.3)O(3 − δ) and Ce(0.8)Gd(0.2)O(1.9) thin films by (18)O tracer incorporation under reducing atmosphere
title_short Mapping electrochemically driven gas exchange of mixed conducting SrTi(0.7)Fe(0.3)O(3 − δ) and Ce(0.8)Gd(0.2)O(1.9) thin films by (18)O tracer incorporation under reducing atmosphere
title_sort mapping electrochemically driven gas exchange of mixed conducting srti(0.7)fe(0.3)o(3 − δ) and ce(0.8)gd(0.2)o(1.9) thin films by (18)o tracer incorporation under reducing atmosphere
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4986286/
https://www.ncbi.nlm.nih.gov/pubmed/27570332
http://dx.doi.org/10.1016/j.ssi.2014.10.024
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