Performance of LSCM-CDC Composite Anode for ITSOFC
(0) It was prepared by glycine-nitrate process (GNP) method for a novel composite material La<,0.7>Sr <,0.3>Cr<,0.5>Mn<,0.5> O<,3-δ>-Ce<,0.8>Ca<,0.2>O<,2- δ> (LSCM-CDC) used for anode of intermediate temperature solid oxide fuel cell (ITSOFC). The microstructure and properties of composite anode LSCM-CDC were measured via X-ray diffraction (XRD), scanning electron microscopy (SEM), AC impedance and four-probe direct current methods. Fluorite-perovskite compounded phase structure was obtained after being sintered at 1400℃ for 15h, the optimum composition of the composite anode of LSCM and CDC was 7 to 3 at molar ratio. At 850℃, the electronic conductivity was 6.49S·cm<-1> in air and 1S·cm<-1> in the reduction atmosphere, respectively. The AC impedance spectra with two arcs showed that LSCM-CDC had low ionic conductivity, which was about two orders of magnitude lower than the electronic conductivity. LSCM-CDC composite anode was stable under different temperatures in pure methane gas with good catalytic performance, which indicated that the composite was a promising anode for ITSOFC.
ITSOFC LSCM-CDC anode material electrical performance rare earths
Ma Xueiu(马学菊) Chen Xiuhua(陈秀华) Ma Wenhui(马文会) Dai Yongnian(戴永年)
Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology Nat Faculty of Physical Science and Technology, Yunnan University, 650091, China
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
391-394
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）