Nano-structured (La, Sr)(Co, Fe)O3+YSZ composite cathodes for intermediate temperature solid oxide fuel cells
2008; Elsevier BV; Volume: 183; Issue: 2 Linguagem: Inglês
10.1016/j.jpowsour.2008.05.082
ISSN1873-2755
AutoresJing Chen, Fengli Liang, Lina Liu, Sanping Jiang, Bo Chi, Jian Pu, Jian Li,
Tópico(s)Magnetic and transport properties of perovskites and related materials
ResumoA nano-structured La0.8Sr0.2Co0.5Fe0.5O3 + Y2O3 doped ZrO2 (LSCF + YSZ) composite cathode was prepared by impregnation of a LSCF-containing solution into porous YSZ structure presintered on the YSZ electrolyte. The result shows that the LSCF phase was formed at 700 °C, forming a nano-structured, effective and functional LSCF + YSZ composite cathode that not only produces high triple phase boundaries for the O2 reduction reaction, but also provides a structurally stable interface between the LSCF and YSZ. The electrode polarization resistance for the O2 reduction reaction is from 0.539 to 0.047 Ω cm2 between 600 and 750 °C, indicating the promising potential the LSCF + YSZ as a high performance cathode for intermediate temperature solid oxide fuel cells.
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