TY - JOUR
T1 - Electrochemical properties of LaBaCo2O5+δ-Sm0.2Ce0.8O1.9 composite cathodes for intermediate-temperature solid oxide fuel cells
AU - Gu, Haitao
AU - Chen, Han
AU - Gao, Ling
AU - Guo, Lucun
PY - 2009/11/30
Y1 - 2009/11/30
N2 - The electrochemical properties of LaBaCo2O5+δ-xSm0.2Ce0.8O1.9 (LBCO-xSDC, x = 20, 30, 40, 50, 60, wt%) were investigated for the potential application in intermediate-temperature solid oxide fuel cells (IT-SOFCs). The LBCO-50SDC composite cathode exhibited the best electrochemical performance in the LBCO-xSDC cathodes. With x = 50 wt%, the ASR was 1.308 Ω cm2 at 500 °C (0.267 Ω cm2 at 600 °C and 0.052 Ω cm2 at 700 °C). The maximum of exchange current density i0 was 0.5630 A cm-2 at 700 °C. The improved electrochemical properties of LBCO-50SDC were ascribed to the porous structures of the cathode and more cathode/electrolyte/gas triple phase boundary (TPB) areas.
AB - The electrochemical properties of LaBaCo2O5+δ-xSm0.2Ce0.8O1.9 (LBCO-xSDC, x = 20, 30, 40, 50, 60, wt%) were investigated for the potential application in intermediate-temperature solid oxide fuel cells (IT-SOFCs). The LBCO-50SDC composite cathode exhibited the best electrochemical performance in the LBCO-xSDC cathodes. With x = 50 wt%, the ASR was 1.308 Ω cm2 at 500 °C (0.267 Ω cm2 at 600 °C and 0.052 Ω cm2 at 700 °C). The maximum of exchange current density i0 was 0.5630 A cm-2 at 700 °C. The improved electrochemical properties of LBCO-50SDC were ascribed to the porous structures of the cathode and more cathode/electrolyte/gas triple phase boundary (TPB) areas.
KW - Cathodic polarization
KW - Composite cathode
KW - Electrochemical impedance spectroscopy
KW - Oxygen reduction reaction
KW - Solid oxide fuel cells
UR - http://www.scopus.com/inward/record.url?scp=69949120987&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2009.07.040
DO - 10.1016/j.electacta.2009.07.040
M3 - 文章
AN - SCOPUS:69949120987
SN - 0013-4686
VL - 54
SP - 7094
EP - 7098
JO - Electrochimica Acta
JF - Electrochimica Acta
IS - 27
ER -