> Details

Neuhaus, Kerstin [Author]; Schmidt, Christina [Author]; Fischer, Liudmila [Author]; Meulenberg, Wilhelm Albert [Author]; Ran, Ke [Author]; Mayer, Joachim [Author]; Baumann, Stefan [Author]

Measurement of polarization effects in dual-phase ceria-based oxygen permeation membranes using Kelvin probe force microscopy

Reference
management

Bookmarks

Remove from
bookmarks

Share this on Whatsapp

Close

Bookmarks



You can manage bookmarks using lists, please log in to your user account for this.
  • Media type: E-Article
  • Title: Measurement of polarization effects in dual-phase ceria-based oxygen permeation membranes using Kelvin probe force microscopy
  • Contributor: Neuhaus, Kerstin [Author]; Schmidt, Christina [Author]; Fischer, Liudmila [Author]; Meulenberg, Wilhelm Albert [Author]; Ran, Ke [Author]; Mayer, Joachim [Author]; Baumann, Stefan [Author]
  • Published: Beilstein-Institut zur Förderung der Chemischen Wissenschaften, 2021
  • Published in: Beilstein journal of nanotechnology 12, 1380 - 1391 (2021). doi:10.3762/bjnano.12.102
  • Language: English
  • DOI: https://doi.org/10.3762/bjnano.12.102
  • ISSN: 2190-4286
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: In this study, a dual phase composite (CSO-FC2O) consisting of 60 vol % Ce0.8Sm0.2O1.9 as oxygen-conductive phase and 40 vol % FeCo2O4 as electron-conductive phase was synthesized. TEM measurements showed a relatively pure dual-phase material with only minor amounts of a tertiary (Sm,Ce)(Fe,Co)O3 perovskite phase and isolated residues of a rock salt phase at the grain boundaries. The obtained material was used as a model to demonstrate that a combination of polarization relaxation measurements and Kelvin probe force microscopy (KPFM)-based mapping of the Volta potential before and after the end of polarization can be used to determine the chemical diffusion coefficient of the ceria component of the composite. The KPFM measurements were performed at room temperature and show diffusion coefficients in the range of 3 × 10−13 cm2·s−1, which is comparable to values measured for single-phase Gd-doped ceria thin films using the same method.
  • Access State: Open Access