Electrochemical Performance of La0.7Sr0.3Cu1-xFexO3-δ as Cathode Material in IT-SOFCs

Abstract:

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To obtain more detail information about the cathode of La0.7Sr0.3Cu1-xFexO3-δ(x= 0.1,0.3,0.5,0.7,0.9)in IT-SOFCs, the cathode material La0.7Sr0.3Cu1-xFexO3-δ(x=0.1, 0.3, 0.5, 0.7, 0.9)was synthesized by a sol-gel method. X-ray diffraction revealed it to be form a single phase of perovskite. The high temperature electrical conductivity was measured by using the four-point dc technique, and cathodic overpotential with SDC(Sm0.15Ce0.85O1.925) electrolyte support was measured by using a current-interruption technique. The investigation of electrocheimical properties suggested that La0.7Sr0.3Cu0.7Fe0.3O3-δ has the highest electrical conductivity and the lowest cathodic polarization. Using La0.7Sr0.3Cu0.7Fe0.3O3-δ as cathode and 65%NiO/SDC as anode based on SDC electrolyte one can obtain higher current density and power density at intermediate temperatures, La0.7Sr0.3Cu0.7Fe0.3O3-δ is considered to be a possible cathode adapted to IT-SOFCs.

Info:

Periodical:

Advanced Materials Research (Volumes 160-162)

Edited by:

Guojun Zhang and Jessica Xu

Pages:

666-670

DOI:

10.4028/www.scientific.net/AMR.160-162.666

Citation:

M. Z. Zheng and X. M. Liu, "Electrochemical Performance of La0.7Sr0.3Cu1-xFexO3-δ as Cathode Material in IT-SOFCs", Advanced Materials Research, Vols. 160-162, pp. 666-670, 2011

Online since:

November 2010

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$35.00

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