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Research on LSCMCo-CDC Composites as Improved Anode Material for IT-SOFC

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Abstract:

La1-xSrxCr1-yMnyO3-δ(LSCM) has unique advantages over the traditional anodes for it’s stability and high catalytic activity being an anode of solid oxide fuel cell(SOFC). Doped cerium material and Co element are used to improve the conductivity both in oxidative and reductive conditions. La0.7Sr0.3Cr0.5Mn0.5-xCoxO3-δ-Ce0.8Ca0.2O2(LSCMCo-CDC) composite anode materials are synthesized in one-step by glycine nitrate process(GNP). X-ray diffraction patterns(XRD), scanning electron microscopy(SEM) and energy dispersive X-ray spectroscopy(EDS) are used to characterize the powders. The conductivity of LSCMCo-CDC increases with increasing the quantity of Co when the temperature is above 750°C, and the maximum values are 10.5 Scm-1 and 0.7 Scm-1 of LSCMCo0.15-CDC at 800°C in air and H2 atmosphere, respectively. It’s conductivity in intermediate temperature have been promoted obviously comparing to that of LSCM-CDC and LSCMCo. Good chemical compatibility between LSCMCo-CDC and La0.9Sr0.1Ga0.8Mg0.2O3-δ(LSGM) is confirmed by XRD results.

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Periodical:

Advanced Materials Research (Volumes 79-82)

Pages:

123-126

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.79-82.123

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Online since:

August 2009

Authors:

Xiu Hua Chen, Wen Hui Ma, Jie Yu

Keywords:

Composite Anode, Conductivity, GNP, LSCMCo-CDC

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© 2009 Trans Tech Publications Ltd. All Rights Reserved

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