Fabrication of dense LaCrO3-based interconnect thin membrane on anode substrates by co-firing

Songlin Wang, Yingchao Dong, Lin Bin, Jianfeng Gao, Xingqin Liu*, Guangyao Meng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

In order to develop cost-effective method to prepare ceramic interconnect membrane for solid oxide fell cell stacks, the triple-phase composites of NiO/Sm0.2Ce0.8O2-δ/La0.7Ca0.3Cr0.97O3-δ with the weight ratios of 6:4:x (x = 0, 2, 3, 4, 5) were, respectively prepared, and then examined as novel anode supports. The sintering character, microstructure, electrical conductivity, fracture strength, and thermal expansion coefficient of the anodes were, respectively investigated in detail as a function of La0.7Ca0.3Cr0.97O3-δ content. Results indicate the above-mentioned performances of NiO/Sm0.2Ce0.8O2-δ/La0.7Ca0.3Cr0.97O3-δ anode at x ≤ 3 have no significant reduction, and are still acceptable for the practical requirements for solid oxide fell cells. Furthermore, by using a simple and cost-effective drop-coating/co-firing process, dense La0.7Ca0.3Cr0.97O3-δ interconnect membrane was successfully prepared on the anode support of NiO/Sm0.2Ce0.8O2-δ/La0.7Ca0.3Cr0.97O3-δ at x = 3. This work presents a simple technical route for developing dense interconnect membranes for Sm0.2Ce0.8O2-δ-based fuel cell stacks.

Original languageEnglish (US)
Pages (from-to)2127-2133
Number of pages7
JournalMaterials Research Bulletin
Volume44
Issue number11
DOIs
StatePublished - Nov 1 2009

Keywords

  • A. Ceramics
  • A. Inorganic compounds
  • A. Thin films
  • B. Electrical properties
  • D. Thermal expansion

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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