Skip to main navigation Skip to search Skip to main content

Investigation of La0.6Sr0.4Co0.2Fe0.8O3-δ electrode performance and microstructural evolutions based on three dimensional microstructure reconstruction and electrochemical simulation

  • T. Shimura
  • , A. He
  • , Y. T. Kim
  • , Z. Jiao
  • , N. Shikazono
  • The University of Tokyo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The influence of initial microstructure of gadolinium-doped-ceria (GDC) interlayer on La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) performance evolution was studied. The cell with the GDC interlayer fired at 1300°C (GDC1300), in which SrZrO3 phase shows discontinuous formation between GDC interlayer and yttria-stabilized-zirconia (YSZ) electrolyte, showed gradual increase of polarization resistance during 100 hours operation. In contrast, when the GDC interlayer was fired at 1200°C (GDC1200), continuous SrZrO3 layer was formed between interlayer electrolyte interface, and the cell showed large polarization resistance with recovery during operation. The strontium oxide phase was formed inside the LSCF cathode phase after the operation of GDC1300 at 800°C, whereas the GDC1300 operated at 700°C and GDC1200 operated at either 700°C or 800°C showed no decomposition of LSCF phase. It is considered that the differences of performance and microstructural evolution are highly dependent on initial microstructures and operating temperatures.

Original languageEnglish
Title of host publicationECS Transactions
EditorsS. C. Singhal, T. Kawada
PublisherElectrochemical Society Inc.
Pages2741-2749
Number of pages9
Edition1
ISBN (Electronic)9781607688150, 9781607688150
DOIs
StatePublished - 30 May 2017
Externally publishedYes
Event15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017 - Hollywood, United States
Duration: 23 Jul 201728 Jul 2017

Publication series

NameECS Transactions
Number1
Volume78
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017
Country/TerritoryUnited States
CityHollywood
Period23/07/1728/07/17

Fingerprint

Dive into the research topics of 'Investigation of La0.6Sr0.4Co0.2Fe0.8O3-δ electrode performance and microstructural evolutions based on three dimensional microstructure reconstruction and electrochemical simulation'. Together they form a unique fingerprint.

Cite this