TY - GEN
T1 - Synthesis and characterization of BaZr0.8y0.2O 3 protonic conductor for Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFCs)
AU - D'Epifanio, Alessandra
AU - Fabbri, Emiliana
AU - Di Bartolomeo, Elisabetta
AU - Licoccia, Silvia
AU - Traversa, Enrico
PY - 2007
Y1 - 2007
N2 - Barium zirconate BaZr0.8Y0.2O3-δ to be used as protonic conductor under hydrogen containing atmosphere in intermediate temperature (500-700°C) solid oxide fuel cells (IT-SOFCs) was prepared using a sol-gel technique to produce materials with controlled chemical structure and microstructural properties. Several synthetic procedures were investigated, dissolving the metal cations in two solvents (water and ethylene glycol) and using different molar ratios of citric acid with respect to the total metal content. A single phase was obtained at temperature as low as 1100°C. To verify the chemical stability, all the sintered oxides were exposed to CO2 and the phase composition of the resulting specimens was investigated using X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). Fuel cell polarization curves on symmetric Pt/BZY20/Pt cells of different thickness were measured at intermediate temperatures (500-700°C).
AB - Barium zirconate BaZr0.8Y0.2O3-δ to be used as protonic conductor under hydrogen containing atmosphere in intermediate temperature (500-700°C) solid oxide fuel cells (IT-SOFCs) was prepared using a sol-gel technique to produce materials with controlled chemical structure and microstructural properties. Several synthetic procedures were investigated, dissolving the metal cations in two solvents (water and ethylene glycol) and using different molar ratios of citric acid with respect to the total metal content. A single phase was obtained at temperature as low as 1100°C. To verify the chemical stability, all the sintered oxides were exposed to CO2 and the phase composition of the resulting specimens was investigated using X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). Fuel cell polarization curves on symmetric Pt/BZY20/Pt cells of different thickness were measured at intermediate temperatures (500-700°C).
UR - http://www.scopus.com/inward/record.url?scp=34250827783&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:34250827783
SN - 1558999299
SN - 9781558999299
T3 - Materials Research Society Symposium Proceedings
SP - 31
EP - 36
BT - Solid-State Ionics-2006
T2 - 2006 MRS Fall Meeting
Y2 - 27 November 2006 through 1 December 2006
ER -