TY - GEN
T1 - Improving the performance of high temperature protonic conductor (HTPC) electrolytes for solid oxide fuel cell (SOFC) applications
AU - Fabbri, Emiliana
AU - Pergolesi, Daniele
AU - D'Epifanio, Alessandra
AU - Di Bartolomeo, Elisabetta
AU - Balestrino, Giuseppe
AU - Licoccia, Silvia
AU - Traversa, Enrico
PY - 2010
Y1 - 2010
N2 - This work investigated the possibility of coupling the high conductivity of cerates and the good chemical stability of zirconates as proton conductor electrolytes for solid oxide fuel cells (SOFCs). Two different approaches are discussed: the synthesis of barium cerate and zirconate solid solutions, and the fabrication of a bilayer electrolyte made of a Y-doped barium cerate pellet covered by a thin protecting layer of Y-doped barium zirconate. The chemical stability of the tailored samples was tested exposing them to 100% CO 2 atmosphere at 700° C for 3 h. X-ray diffraction (XRD) analysis was used to investigate the phase composition of the specimens before and after the CO2 treatment. Electrochemical impedance spectroscopy (EIS) measurements were carried out in humidified H2. Hydrogen-air breathing fuel cell experiments were carried out at 700°C.
AB - This work investigated the possibility of coupling the high conductivity of cerates and the good chemical stability of zirconates as proton conductor electrolytes for solid oxide fuel cells (SOFCs). Two different approaches are discussed: the synthesis of barium cerate and zirconate solid solutions, and the fabrication of a bilayer electrolyte made of a Y-doped barium cerate pellet covered by a thin protecting layer of Y-doped barium zirconate. The chemical stability of the tailored samples was tested exposing them to 100% CO 2 atmosphere at 700° C for 3 h. X-ray diffraction (XRD) analysis was used to investigate the phase composition of the specimens before and after the CO2 treatment. Electrochemical impedance spectroscopy (EIS) measurements were carried out in humidified H2. Hydrogen-air breathing fuel cell experiments were carried out at 700°C.
KW - Chemical stability
KW - IT-SOFCs
KW - Proton conductors
UR - http://www.scopus.com/inward/record.url?scp=75849145561&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.421-422.336
DO - 10.4028/www.scientific.net/KEM.421-422.336
M3 - Conference contribution
AN - SCOPUS:75849145561
SN - 0878493069
SN - 9780878493067
VL - 421-422
T3 - Key Engineering Materials
SP - 336
EP - 339
BT - Asian Ceramic Science for Electronics III and Electroceramics in Japan XII
T2 - 6th Asian Meeting on Electroceramics, AMEC-6, in conjunction with the Electronics Division Meeting of the Ceramic Society of Japan
Y2 - 22 October 2008 through 24 October 2008
ER -