TY - GEN
T1 - Exchange current density of solid oxide fuel cell electrodes
AU - Yonekura, T.
AU - Tachikawa, Y.
AU - Yoshizumi, T.
AU - Shiratori, Y.
AU - Ito, K.
AU - Sasaki, K.
PY - 2011
Y1 - 2011
N2 - It is desired to develop computational procedures to simulate internal current density, anode/cathode gas concentrations, and temperature distribution in solid oxide fuel cell (SOFC) systems. In this study, the influences of various operational conditions on the exchange current density, the essential parameter to simulate SOFC performance, are revealed and discussed. The anodic exchange current density depended strongly on the humidity of H 2-based fuel gas, and it exhibited the highest value at around 40% H 2O. The cathodic exchange current density was strongly affected by the operational temperature. Parameters necessary to describe dependencies of exchange current density on various operational parameters were determined by fitting measured exchange current density values with empirical equations.
AB - It is desired to develop computational procedures to simulate internal current density, anode/cathode gas concentrations, and temperature distribution in solid oxide fuel cell (SOFC) systems. In this study, the influences of various operational conditions on the exchange current density, the essential parameter to simulate SOFC performance, are revealed and discussed. The anodic exchange current density depended strongly on the humidity of H 2-based fuel gas, and it exhibited the highest value at around 40% H 2O. The cathodic exchange current density was strongly affected by the operational temperature. Parameters necessary to describe dependencies of exchange current density on various operational parameters were determined by fitting measured exchange current density values with empirical equations.
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U2 - 10.1149/1.3570081
DO - 10.1149/1.3570081
M3 - Conference contribution
AN - SCOPUS:84856857116
SN - 9781607682363
T3 - ECS Transactions
SP - 1007
EP - 1014
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 -