Article
Licensed
Unlicensed Requires Authentication

La0.6Sr0.4CoO3-δ (LSC) Thin Film Electrodes with Very Fast Oxygen Reduction Kinetics Prepared by a Sol-Gel Route

  • , , , and
Published/Copyright: September 10, 2012
Zeitschrift für Physikalische Chemie
From the journal Zeitschrift für Physikalische Chemie Volume 226 Issue 9-10

Abstract

La0.6Sr0.4CoO3-δ (LSC) thin film electrodes of about 80 nm thickness were prepared via a sol-gel route on yttria-stabilized zirconia (YSZ) and gadolinium doped ceria (GDC) solid electrolytes. Impedance measurements on microelectrodes fabricated from these films revealed very low polarization resistances for electrochemical oxygen exchange at intermediate temperatures (500–600 ºC). Prerequisite for the very fast oxygen reduction kinetics was a limitation of the preparation (annealing) temperature to 600 ºC. Already after ca. 15 minutes annealing of the sol-gel prepared layer at this temperature, electrodes were electrochemically highly active despite low crystallinity (almost XRD amorphous). LSC electrodes on GDC showed much higher polarization resistances. However, this originated from an additional interfacial resistance rather than from kinetically slow LSC surfaces.

Keywords: Solid State Electrochemistry; Oxygen Reduction; Lanthanum Cobaltite; Impedance; Microelectrode
* Correspondence address: Vienna University of Technology, Institute of Chemical Technologies and Analytics, Getreidemarkt 9-164/EC, 1060 Wien, Österreich,
Published Online: 2012-9-10
Published in Print: 2012-10-1

© by Oldenbourg Wissenschaftsverlag, München, Germany

Articles in the same Issue

  1. Preface
  2. Building versus Structure Elements: Ionic Charge Carriers in Solids
  3. A Brief Review of Determinism in the Prediction of Localized Corrosion Damage
  4. La0.6Sr0.4CoO3-δ (LSC) Thin Film Electrodes with Very Fast Oxygen Reduction Kinetics Prepared by a Sol-Gel Route
  5. Nitrate Reduction on Platinum (111) Surfaces Modifiedl with Bi: Single Crystalsl and Nanoparticles
  6. Fundamental Investigation of the HER on a Pt(111) Surface at Temperatures down to 120K
  7. Impedance Spectra of Pt(100) in Aqueous H2SO4 and HCl Solutions Around the Hydrogen Adsorption-Desorption Peak
  8. Lifting of Thermally-Induced Surface Reconstruction on Au(100) Electrode by Protonated Molecules of Dopamine
  9. The Under Potential Deposition of Cu on Au (111) in Nonaqueous Acetonitrile
  10. Lead Underpotential Deposition on Pt-submonolayer Modified Au(111)
  11. Adsorption of Solvent Cations on Au(111) and Au(100) in Alkylimidazolium-Based Ionic Liquids – Worm-Like versus Micelle-Like Structures
  12. Measurements of the Potentials of Zero Free Charge and Zero Total Charge for 1-thio- ± bβ-D-glucose and DPTL Modified Au(111) Surface in Different Electrolyte Solutions
  13. Tert-Pentanol Adsorption on Ag(100) and Ag(110) from an Aqueous Solution and its Comparison with that on Ag(111), Hg, Ga and Bi(001)
  14. Tetrahedral Palladium Nanocrystals: A New Support for Platinum Monolayer Electrocatalysts with High Activity and Stability in the Oxygen Reduction Reaction
  15. Surface Modification of a n-Si(111) Electrode through Aldehyde Grafting and Subsequent Metallization: Theory and Experiment
  16. Ion Transfer Mechanisms Accompanying p-Doping of Poly(3,4-Ethylenedioxythiophene) Films in Deep Eutectic Solvents
  17. Adsorption of Additives: Hardness and Softness at Electrified Interfaces
https://doi.org/10.1524/zpch.2012.0278
Keywords for this article
Solid State Electrochemistry; Oxygen Reduction; Lanthanum Cobaltite; Impedance; Microelectrode

Articles in the same Issue

  1. Preface
  2. Building versus Structure Elements: Ionic Charge Carriers in Solids
  3. A Brief Review of Determinism in the Prediction of Localized Corrosion Damage
  4. La0.6Sr0.4CoO3-δ (LSC) Thin Film Electrodes with Very Fast Oxygen Reduction Kinetics Prepared by a Sol-Gel Route
  5. Nitrate Reduction on Platinum (111) Surfaces Modifiedl with Bi: Single Crystalsl and Nanoparticles
  6. Fundamental Investigation of the HER on a Pt(111) Surface at Temperatures down to 120K
  7. Impedance Spectra of Pt(100) in Aqueous H2SO4 and HCl Solutions Around the Hydrogen Adsorption-Desorption Peak
  8. Lifting of Thermally-Induced Surface Reconstruction on Au(100) Electrode by Protonated Molecules of Dopamine
  9. The Under Potential Deposition of Cu on Au (111) in Nonaqueous Acetonitrile
  10. Lead Underpotential Deposition on Pt-submonolayer Modified Au(111)
  11. Adsorption of Solvent Cations on Au(111) and Au(100) in Alkylimidazolium-Based Ionic Liquids – Worm-Like versus Micelle-Like Structures
  12. Measurements of the Potentials of Zero Free Charge and Zero Total Charge for 1-thio- ± bβ-D-glucose and DPTL Modified Au(111) Surface in Different Electrolyte Solutions
  13. Tert-Pentanol Adsorption on Ag(100) and Ag(110) from an Aqueous Solution and its Comparison with that on Ag(111), Hg, Ga and Bi(001)
  14. Tetrahedral Palladium Nanocrystals: A New Support for Platinum Monolayer Electrocatalysts with High Activity and Stability in the Oxygen Reduction Reaction
  15. Surface Modification of a n-Si(111) Electrode through Aldehyde Grafting and Subsequent Metallization: Theory and Experiment
  16. Ion Transfer Mechanisms Accompanying p-Doping of Poly(3,4-Ethylenedioxythiophene) Films in Deep Eutectic Solvents
  17. Adsorption of Additives: Hardness and Softness at Electrified Interfaces
Downloaded on 9.4.2026 from https://www.degruyterbrill.com/document/doi/10.1524/zpch.2012.0278/html
Scroll to top button