Effects of Ca-source on the sintering and electrical properties of La 0.7Ca0.3Cr0.9Co0.1O 3-δ for solid oxide fuel cell interconnects

Sung Tae Park, Byung Hyun Choi, Mi Jung Ji, Yong Tae An, Heon Jin Choi

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7 Citations (Scopus)

Abstract

Effects on sintering and electrical properties of La0.7Ca 0.3Cr0.9Co0.1O3-δ system, a interconnect material for cylindrical and flat tubular solid oxide fuel cells (SOFC), have been investigated by Ca-source when using CaCO3 and CaF2.. When using CaCO3 and CaF2 was mixing as Ca-source, single phased perovskite solid solution was observed for each sample. The sintering temperature was decreased by CaF3 contents was increased. When using 0.1 mole CaF3 was densely sintered at 1400°C and relative density was 93.8%. Also, electrical conductivity in oxidation and reducing atmosphere was 47, 4.3 S/cm, respectively, due to F-ion enhance the electrical conductivity in reducing atmosphere.

Original languageEnglish
Pages (from-to)246-250
Number of pages5
JournalJournal of the Korean Ceramic Society
Volume48
Issue number3
DOIs
Publication statusPublished - 2011 May 1

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

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