La0.4Sr0.6Co0.8Fe0.2O3-δ/Ce0.9Gd0.1O2-δ Interface: Characterization by High Resolution SEM and TEM

A. L. Soldati, Laura Baqué, H. Troiani, C. Cotaro, A. Schreiber, A. Caneiro, A. Serquis

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

In this work, we successfully applied a FIB/lift-out technique to prepare site-specific thin samples containing the cathode/electrolyte interface between two La0.4Sr0.6Co0.8Fe0.2O3-delta (LSCF) / Ce0.9Gd0.1O2-delta (CGO) half cells. Despite different cathode thicknesses (15 mu m and a 5 mu m), both samples presented similar composition and nano-sized structure. However, an exhaustive microscopic analysis by SEM and TEM in high resolution modes revealed that the 15 mu m sample presented a perfectly attached interface, while the other showed pores at the interfacial boundary, decreasing the real LSCF/CGO contact and increasing the area specific resistance. The presented combined techniques are a powerful tool to investigate subtle microstructural changes that may occur in the electrolyte/electrode interface and are adequate for studying changes after long term operation conditions.
Original languageEnglish
JournalE C S Transactions
Volume35
Pages (from-to)657-664
ISSN1938-5862
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event12th International Symposium on Solid Oxide Fuel Cells, 219th ECS Meeting - Montreal Convention Center, Montreal, QC, Canada
Duration: 1 May 20116 May 2011

Conference

Conference12th International Symposium on Solid Oxide Fuel Cells, 219th ECS Meeting
LocationMontreal Convention Center
CountryCanada
CityMontreal, QC
Period01/05/201106/05/2011

Fingerprint

Dive into the research topics of 'La<sub>0.4</sub>Sr<sub>0.6</sub>Co<sub>0.8</sub>Fe<sub>0.2</sub>O<sub>3-δ</sub>/Ce<sub>0.9</sub>Gd<sub>0.1</sub>O<sub>2-δ</sub> Interface: Characterization by High Resolution SEM and TEM'. Together they form a unique fingerprint.

Cite this