TY - GEN
T1 - Fuel impurity tolerance of solid oxide fuel cells
AU - Sasaki, K.
AU - Adachi, S.
AU - Haga, K.
AU - Uchikawa, M.
AU - Yamamoto, J.
AU - Iyoshi, A.
AU - Chou, J. T.
AU - Shiratori, Y.
AU - Itoh, K.
PY - 2007
Y1 - 2007
N2 - While SOFCs are the most flexible fuel cells with respect to fuel selection, fuel impurities in practical SOFC fuels can cause degradation of electrodes and thus electrochemical performance. The understanding of fuel impurity poisoning and the increase in tolerance are therefore of technological relevance for SOFC commercialization. Along with thermochemical calculations on the stability of typical fuel impurities under SOFC operational conditions, fuel impurity poisoning of SOFCs is analyzed by using various impurity-containing fuel gases with respect to operational temperature, type and concentration of impurities, fuel composition, and steam-to-carbon ratio. We have revealed that poisoning depends on operational conditions and types of fuels and impurities. The poisoning effect becomes significant for internal-reforming SOFCs operated with humidified methane-based fuels. Poisoning mechanisms are discussed, based on cell voltage and durability data.
AB - While SOFCs are the most flexible fuel cells with respect to fuel selection, fuel impurities in practical SOFC fuels can cause degradation of electrodes and thus electrochemical performance. The understanding of fuel impurity poisoning and the increase in tolerance are therefore of technological relevance for SOFC commercialization. Along with thermochemical calculations on the stability of typical fuel impurities under SOFC operational conditions, fuel impurity poisoning of SOFCs is analyzed by using various impurity-containing fuel gases with respect to operational temperature, type and concentration of impurities, fuel composition, and steam-to-carbon ratio. We have revealed that poisoning depends on operational conditions and types of fuels and impurities. The poisoning effect becomes significant for internal-reforming SOFCs operated with humidified methane-based fuels. Poisoning mechanisms are discussed, based on cell voltage and durability data.
UR - http://www.scopus.com/inward/record.url?scp=45249084549&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=45249084549&partnerID=8YFLogxK
U2 - 10.1149/1.2729277
DO - 10.1149/1.2729277
M3 - Conference contribution
AN - SCOPUS:45249084549
SN - 9781566775564
SN - 9781566775540
T3 - ECS Transactions
SP - 1675
EP - 1683
BT - ECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
T2 - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
Y2 - 3 June 2007 through 8 June 2007
ER -