The synthesis and characterization of the Sm0.5Sr0.5Co1-xCuxO3-δ cathode by the glycine-nitrate process

I. Ming Hung, Kuan-Zong Fung, Chung Ta Lin, Min Hsiung Hon

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4 Citations (Scopus)

Abstract

In this study, a new oxygen-deficient cathode material, Sm0.5Sr0.5Co1-xCuxO3-δ (SSCCu) was developed. It is expected to enhance the efficiency of intermediate-temperature solid oxide fuel cells (IT-SOFCs). The structure, conductivity and electrochemical performance of SSCCu were examined as a function of copper content. The structure of Sm0.5Sr0.5Co0.9Cu0.1O3-δ and Sm0.5Sr0.5Co0.8Cu0.2O3-δ samples was a single orthorhombic perovskite phase. Second phase SrCoO2.8, however, formed in the Sm0.5Sr0.5Co0.7Cu0.3O3-δ and Sm0.5Sr0.5Co0.6Cu0.4O3-δ samples. The conductivity of the Sm0.5Sr0.5Co0.7Cu0.3O3-δ cathode was higher than that of other samples. However, the Sm0.5Sr0.5Co0.8Cu0.2O3-δ electrode exhibited the lowest overpotential of 25 mV at 400 mA cm-2 and the lowest area special resistance of 0.2 Ω cm2 at 700 °C.

Original languageEnglish
Pages (from-to)116-121
Number of pages6
JournalJournal of Power Sources
Volume193
Issue number1
DOIs
Publication statusPublished - 2009 Aug 1

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Physical and Theoretical Chemistry

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