On the sol-gel synthesis and characterization of (BaSr)(CeZr)O3-based fuel cell electrolytes

Shivendra Kumar Jaiswal, Sung Min Choi, Jongsup Hong, Kyung Joong Yoon, Ji Won Son, Byung Kook Kim, Hae Weon Lee, Jong Ho Lee

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Abstract

Proton-conducting ceramics have been very useful due to their potential applications in fuel cells, electrolysers, and hydrogen membranes. The proton-conducting fuel cell electrolytes (Ba1−xSrx)(Ce0.75Zr0.10Y0.15)O3−δ (x = 0–1.0) have been synthesized through sol-gel method and characterized with regard to phase, structural stability, and electrical conductivity. The structural behavior has been investigated by X-ray diffraction and theRaman spectroscopy. The XRD analysis shows perovskite-type cubic structure and values of lattice parameter lie in the range of ~4.29 to ~4.40 Å. Strontium substitution leads to lattice contraction, strengthening of the metal-oxygen bond, and increase of oxygen content (3−δ). The Raman spectra show different types of stretching/vibrations corresponding to octahedral, M-O stretching, and oxygen vacancies. The electrical conduction was found to be protonic in nature and decreases with increase of strontium insertion. The composition x = 0.4 shows relatively better structural stability against humid air/boiling water condition while inferior in carbon dioxide atmosphere.

Original languageEnglish
Pages (from-to)2529-2538
Number of pages10
JournalIonics
Volume22
Issue number12
DOIs
Publication statusPublished - 2016 Dec 1

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All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Jaiswal, S. K., Choi, S. M., Hong, J., Yoon, K. J., Son, J. W., Kim, B. K., Lee, H. W., & Lee, J. H. (2016). On the sol-gel synthesis and characterization of (BaSr)(CeZr)O3-based fuel cell electrolytes. Ionics, 22(12), 2529-2538. https://doi.org/10.1007/s11581-016-1801-3