TY - GEN
T1 - Multilayered SOFC anode structure with electroless Ni-YSZ for enhancement of cell performance
AU - Mukhopadhyay, Madhumita
AU - Mukhopadhyay, J.
AU - Das Sharma, A.
AU - Basu, R. N.
PY - 2011
Y1 - 2011
N2 - High performance SOFC is fabricated using multilayer anode support with graded porosity. The graded anode fulfills the requirement of proper fuel oxidation at anode, effective electrochemical reaction at anode/electrolyte interface, thermal compatibility among cell components and long term stability. In such multilayer anode, conventional cermet (40 vol% Ni) helps in proper fuel diffusion and catalytic oxidation. Novel electroless anode (28-32 vol% Ni) is employed adjacent to YSZ electrolyte for effective electrochemical activity and thermal compatibility. Because of the presence of unique core (YSZ)-shell (Ni) microstructure, electroless anode is found to extend the anodic electrochemical reaction from electrolyte/anode interface to the bulk. Significant performance enhancement with current density of ∼3.3 Acm -2 is observed for single cells fabricated with multilayer anode at 800°C, 0.7V. The multilayer anode is found to reduce the cell degradation from ∼11% (conventional anode) to ∼1.6% /1000 h during long term performance (∼2000 h).
AB - High performance SOFC is fabricated using multilayer anode support with graded porosity. The graded anode fulfills the requirement of proper fuel oxidation at anode, effective electrochemical reaction at anode/electrolyte interface, thermal compatibility among cell components and long term stability. In such multilayer anode, conventional cermet (40 vol% Ni) helps in proper fuel diffusion and catalytic oxidation. Novel electroless anode (28-32 vol% Ni) is employed adjacent to YSZ electrolyte for effective electrochemical activity and thermal compatibility. Because of the presence of unique core (YSZ)-shell (Ni) microstructure, electroless anode is found to extend the anodic electrochemical reaction from electrolyte/anode interface to the bulk. Significant performance enhancement with current density of ∼3.3 Acm -2 is observed for single cells fabricated with multilayer anode at 800°C, 0.7V. The multilayer anode is found to reduce the cell degradation from ∼11% (conventional anode) to ∼1.6% /1000 h during long term performance (∼2000 h).
UR - http://www.scopus.com/inward/record.url?scp=84855851833&partnerID=8YFLogxK
U2 - 10.1149/1.3570115
DO - 10.1149/1.3570115
M3 - Conference contribution
AN - SCOPUS:84855851833
SN - 9781607682363
T3 - ECS Transactions
SP - 1293
EP - 1302
BT - Solid Oxide Fuel Cells 12, SOFC XII
T2 - 12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting
Y2 - 1 May 2011 through 6 May 2011
ER -