Preparation of Double-Perovskites Sr2Fe1-xScxMoO6-δ Powders for the Cathode of SOEC by Sol-Gel Citrate Method

Ben Ge; Jing Tao Ma; De Sheng Ai; Xu Ping Lin; Chang Sheng Deng

doi:10.4028/www.scientific.net/AMR.105-106.657

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 105-106Preparation of Double-Perovskites...

Preparation of Double-Perovskites Sr₂Fe_1-xSc_xMoO_6-δ Powders for the Cathode of SOEC by Sol-Gel Citrate Method

Abstract:

Double-perovskite Sr2Fe1-xScxMoO6- (x = 0, 0.05, 0.1, 0.2, 0.3, 0.4) powders have been synthesized by sol-gel citrate method. Initial powders were calcined in different temperature and atmosphere (air, H2(4vol%)/Ar), then analyzed by using the methods of X-ray, scanning electron microscopy (SEM), as well as thermal analysis. It is found that the formation of perovskite structure is related to the content of Sc, pH value, calcination temperature and sintering atmosphere. Especially, a pure perovskite structure almost completely formed after three hours sintering in atmosphere of H2(4vol%)/Ar. Although the formation of perovskite structure also happened in the air atmosphere, at the same time the SrMoO4 structure formed undesirably as a result of oxidization of Mo.

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Periodical:

Advanced Materials Research (Volumes 105-106)

Pages:

657-659

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.105-106.657

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Online since:

April 2010

Authors:

Ben Ge, Jing Tao Ma, De Sheng Ai, Xu Ping Lin, Chang Sheng Deng

Keywords:

Double-Perovskite, SOEC, Sol-Gel Citrate Method

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