Experimental design for voltage driven tracer incorporation and diffusion studies on oxide thin film electrodes

Tobias M. Huber, Edvinas Navickas, Kazunari Sasaki, Bilge Yildiz, Harry Tuller, Gernot Friedbacher, Herbert Hutter, Juergen Fleig

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The effect of an applied overpotential on oxygen isotope incorporation and diffusion in oxide thin film electrodes is investigated by a novel experimental approach. A special electrode geometry leads to in-plane electron flow, perpendicular oxide ion flow and a well-defined laterally varying driving force. This design allows one to obtain a series of tracer depth profiles induced by a range of overpotentials on one and the same thin film. The approach was applied to La0.8Sr0.2MnO3 (LSM) thin films deposited by pulsed laser deposition (PLD) on yttria stabilized zirconia (YSZ) single crystals. Tracer depth profiles were measured by secondary ion mass spectrometry (SIMS). These depth profiles include examples of pronounced apparent uphill diffusion that can be explained by considering an interplay of polarization-induced changes in stoichiometry within the LSM grains combined with fast oxygen transport along the grain boundaries.

Original languageEnglish
Pages (from-to)F809-F814
JournalJournal of the Electrochemical Society
Volume164
Issue number7
DOIs
Publication statusPublished - Jan 1 2017

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Design of experiments
Oxide films
Thin films
Electrodes
Electric potential
Oxygen Isotopes
Oxygen
Yttria stabilized zirconia
Pulsed laser deposition
Secondary ion mass spectrometry
Stoichiometry
Oxides
Isotopes
Grain boundaries
Single crystals
Ions
Polarization
Geometry
Electrons

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

Cite this

Experimental design for voltage driven tracer incorporation and diffusion studies on oxide thin film electrodes. / Huber, Tobias M.; Navickas, Edvinas; Sasaki, Kazunari; Yildiz, Bilge; Tuller, Harry; Friedbacher, Gernot; Hutter, Herbert; Fleig, Juergen.

In: Journal of the Electrochemical Society, Vol. 164, No. 7, 01.01.2017, p. F809-F814.

Research output: Contribution to journalArticle

Huber, Tobias M. ; Navickas, Edvinas ; Sasaki, Kazunari ; Yildiz, Bilge ; Tuller, Harry ; Friedbacher, Gernot ; Hutter, Herbert ; Fleig, Juergen. / Experimental design for voltage driven tracer incorporation and diffusion studies on oxide thin film electrodes. In: Journal of the Electrochemical Society. 2017 ; Vol. 164, No. 7. pp. F809-F814.
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