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HomeKey Engineering MaterialsKey Engineering Materials Vol. 768Diffusion Phenomenon of Precious Metal Electrode...

Diffusion Phenomenon of Precious Metal Electrode Elements into Ceramic Electrolytes after Working Process at SOFC and Sensors

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Abstract:

SOFC single cell use the preparation process of precision casting-screen printing-co-sintering and developed a new electrode such as precious metal ceramic electrode. Although SOFC single battery comprehensive performance indicators in our country are currently synchronized with the international advanced technology level, the new precious metal ceramic electrode has not been tested for long-term operation of the full battery. In order to analyze the practicality of the new noble metal ceramic electrode, especially whether the noble metal electrode is one of the factors that cause performance degradation, this paper studies whether the noble metal Pd electrode would diffuse into the YSZ electrolyte during the energization process. The composition and morphology of the electrolytes of 350h half-cell was analyzed by the battery polarization test, SEM, EDX and Electron etching depth analysis of XPS. The result shows that the noble metal Pd element has diffused more than 100 nm into the YSZ electrolyte after 350h constant current.

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Periodical:

Key Engineering Materials (Volume 768)

Pages:

167-171

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.768.167

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Online since:

April 2018

Authors:

Man Man Liu*, Dong Yan, Ping Feng, Jian Pu, Bo Chi, Li Jian

Keywords:

Ceramic Electrode, Pd Diffuse, Precious Metal, SOFCs

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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