INVESTIGADORES
SERQUIS Adriana Cristina
artículos
Título:
La0.4Sr0.6Co0.8Fe0.2O3-d / Ce0.9Gd0.1O2-d Interface: Characterization by High Resolution SEM and TEM
Autor/es:
A. SOLDATI; L. BAQUÉ; H. TROIANI; C. COTARO; A. SCHREIBER; R. WIRTH; A. CANEIRO; A. SERQUIS
Revista:
ECS Transactions
Editorial:
Electrochemical Society
Referencias:
Año: 2011 vol. 35 p. 657 - 664
ISSN:
1938-6737
Resumen:
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- (LSCF) /
Ce0.9Gd0.1O2- (CGO) half cells. Despite different cathode
thicknesses (15 !m and a 5 !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 !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.