TY - JOUR
T1 - Nanostructured Gd-CeO 2 electrolyte for solid oxide fuel cell by aqueous tape casting
AU - Akbari-Fakhrabadi, A.
AU - Mangalaraja, R. V.
AU - Sanhueza, Felipe A.
AU - Avila, Ricardo E.
AU - Ananthakumar, S.
AU - Chan, S. H.
N1 - Funding Information:
The authors acknowledge FONDECYT, Government of Chile (Project No.: 1100349 ) Direction of Investigation, University of Concepcion, Chile for the support to carry out this project.
PY - 2012/11/15
Y1 - 2012/11/15
N2 - Gadolinia-doped ceria (Ce 0.9Gd 0.1O 1.95, GDC) electrolyte was fabricated by aqueous-based tape casting method for solid oxide fuel cells (SOFCs). The ceramic powder prepared by combustion synthesis was used with poly acrylic acid (PAA), poly vinyl alcohol (PVA), poly ethylene glycol (PEG), Octanol, 2,4,7,9-tetramethyl-5-decyne-4,7-diol ethoxylate and double distilled water as dispersant, binder, plasticizer, defoamer, surfactant and solvent respectively, to prepare stable GDC slurry. The conditions for preparing stable GDC slurries were studied and optimized by sedimentation, zeta potential and viscosity measurements. Green tapes with smooth surface, flexibility, thickness in the range of 0.35-0.4 mm and 45% relative green density were prepared. Conventional and flash sintering techniques were used and compared for densification which demonstrated the possibility of surpassing sintering at high temperatures and retarding related grain growth.
AB - Gadolinia-doped ceria (Ce 0.9Gd 0.1O 1.95, GDC) electrolyte was fabricated by aqueous-based tape casting method for solid oxide fuel cells (SOFCs). The ceramic powder prepared by combustion synthesis was used with poly acrylic acid (PAA), poly vinyl alcohol (PVA), poly ethylene glycol (PEG), Octanol, 2,4,7,9-tetramethyl-5-decyne-4,7-diol ethoxylate and double distilled water as dispersant, binder, plasticizer, defoamer, surfactant and solvent respectively, to prepare stable GDC slurry. The conditions for preparing stable GDC slurries were studied and optimized by sedimentation, zeta potential and viscosity measurements. Green tapes with smooth surface, flexibility, thickness in the range of 0.35-0.4 mm and 45% relative green density were prepared. Conventional and flash sintering techniques were used and compared for densification which demonstrated the possibility of surpassing sintering at high temperatures and retarding related grain growth.
KW - Aqueous tape casting
KW - Electrolyte
KW - Flash sintering
KW - GDC
KW - SOFC
UR - http://www.scopus.com/inward/record.url?scp=84864813865&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2012.07.005
DO - 10.1016/j.jpowsour.2012.07.005
M3 - Article
AN - SCOPUS:84864813865
SN - 0378-7753
VL - 218
SP - 307
EP - 312
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -