A study of nickel-substituted lanthanum cobaltite as cathode materials for SOFCs

Y. Uzumaki, S. Hashimoto, K. Amezawa, T. Kawada

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1 Citation (Scopus)

Abstract

LaNixCo1-xO3-δ (x = 0.2, 0.4, 0.6, 0.8) was prepared by Pechini method and electrochemical properties as cathode were evaluated under controlled temperature and p(O2) by AC impedance measurement. Electrode performance was increased with increasing nickel contents concerning area specific interfacial conductivity and capacitance. σE of LaNi0.6Co0.4O3-δ (LNC64) was higher than that of LaNi0.6Fe0.4O 3-δ (LNF64). For the result of area specific interfacial capacitance, it was suggested that the variation of oxygen vacancies with p(O2) of LaNixCo1-xO3-δ series was smaller than that of La0.6Sr0.4Co 0.2Fe0.8O3-δ (LSCF6428).

Original languageEnglish
Pages (from-to)29-35
Number of pages7
JournalECS Transactions
Volume50
Issue number44
DOIs
Publication statusPublished - 2012 Dec 1

ASJC Scopus subject areas

  • Engineering(all)

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