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

doi:10.1149/1.3570044

La_0.4Sr_0.6Co_0.8Fe_0.2O_3-δ/Ce_0.9Gd_0.1O_2-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 journal › Conference article › Research › peer-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 language	English
Journal	E C S Transactions
Volume	35
Pages (from-to)	657-664
ISSN	1938-5862
DOIs	https://doi.org/10.1149/1.3570044
Publication status	Published - 2011
Externally published	Yes
Event	219th ECS Meeting: 12th International Symposium on Solid Oxide Fuel Cells - Montreal Convention Center, Montreal, Canada Duration: 1 May 2011 → 6 May 2011 Conference number: 219 http://www.electrochem.org/meetings/biannual/219/219.htm

Conference

Conference	219th ECS Meeting
Number	219
Location	Montreal Convention Center
Country/Territory	Canada
City	Montreal
Period	01/05/2011 → 06/05/2011
Internet address	http://www.electrochem.org/meetings/biannual/219/219.htm

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10.1149/1.3570044

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

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.",

author = "Soldati, {A. L.} and Laura Baqu{\'e} and H. Troiani and C. Cotaro and A. Schreiber and A. Caneiro and A. Serquis",

year = "2011",

doi = "10.1149/1.3570044",

language = "English",

volume = "35",

pages = "657--664",

journal = "E C S Transactions",

issn = "1938-5862",

publisher = "The Electrochemical Society",

note = "219th ECS Meeting : 12th International Symposium on Solid Oxide Fuel Cells ; Conference date: 01-05-2011 Through 06-05-2011",

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T1 - La0.4Sr0.6Co0.8Fe0.2O3-δ/Ce0.9Gd0.1O2-δ Interface: Characterization by High Resolution SEM and TEM

AU - Soldati, A. L.

AU - Baqué, Laura

AU - Troiani, H.

AU - Cotaro, C.

AU - Schreiber, A.

AU - Caneiro, A.

AU - Serquis, A.

N1 - Conference code: 219

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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.

U2 - 10.1149/1.3570044

DO - 10.1149/1.3570044

M3 - Conference article

SN - 1938-5862

VL - 35

SP - 657

EP - 664

JO - E C S Transactions

JF - E C S Transactions

T2 - 219th ECS Meeting

Y2 - 1 May 2011 through 6 May 2011

ER -