Impact of volatile boron species on the microstructure and performance of nano-structured (Gd,Ce)O 2 infiltrated (La,Sr)MnO 3 cathodes of solid oxide fuel cells

Kongfa Chen, Na Ai, Caroline Lievens, Jonathan Love, San Ping Jiang*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

27 Citations (Scopus)

Abstract

The impact of volatile boron species on the microstructure and performance of nano-structured (Gd,Ce)O 2-infiltrated (La,Sr)MnO 3 (GDC-LSM) cathodes of solid oxide fuel cells is studied for the first time. The results indicate that after the heat treatment of the cathodes at 800 °C in air for 30 days in the presence of borosilicate glass significant grain growth and agglomeration of infiltrated GDC nanoparticles are observed. The electrode polarization resistance of the GDC-LSM cathode after the heat treatment in the presence of glass is 3.15 Ω cm 2 at 800 °C, substantially higher than 0.17 Ω cm 2 of the cathode heat-treated in the absence of glass under identical conditions. ICP-OES analysis shows the deposition of boron species in the cathodes after sintering in the presence of glass powder. The results demonstrate the significant detrimental effect of volatile boron species on the microstructure and activity of nano-structured GDC-LSM cathode.

Original languageEnglish
Pages (from-to)129-132
Number of pages4
JournalElectrochemistry communications
Volume23
Issue number1
Early online date1 Aug 2012
DOIs
Publication statusPublished - 1 Sep 2012
Externally publishedYes

Keywords

  • Boron
  • Glass sealant
  • Infiltrated LSM-GDC cathode
  • Nano-structure
  • Solid oxide fuel cells
  • ITC-ISI-JOURNAL-ARTICLE

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