Electrode properties of the ruddlesden-popper series, Lan +1NinO3n+1 (n=1, 2, and 3), as intermediate-temperature solid oxide fuel cells

Suguru Takahashi, Shunsuke Nishimoto, Motohide Matsuda, Michihiro Miyake

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

The Ruddlesden-Popper phases, Lan+1Ni nO3n+1 (n=1, 2, and 3), were synthesized by a solid-state reaction for use as cathodes in an intermediate-temperature (500°-700°C) solid oxide fuel cell. The samples crystallized into an orthorhombic layered perovskite structure. The overall electrical conductivity increased with the increase of n in the intermediate temperature range. Single test-cells, which consisted of samarium-oxide-doped ceria (SDC; Sm0.2Ce 0.8Ox) as an electrolyte, Ni-SDC cermet (Ni-SDC) as an anode, and Lan+1NinO3n+1 as a cathode, were fabricated for measurements of cell performance at 500°-700°C. Current interruption measurements revealed that both the ohmic and overpotential losses at 700°C decreased with the increase of n. La4Ni3O10 was found to exhibit the best cathode characteristics in the Lan+1NinO 3n+1 series. Maximum test-cell power densities with La 4Ni3O10 (n=3) were 10.2, 36.5, and 88.2 mW/cm2 at 500°, 600°, and 700°C, respectively.

Original languageEnglish
Pages (from-to)2329-2333
Number of pages5
JournalJournal of the American Ceramic Society
Volume93
Issue number8
DOIs
Publication statusPublished - Aug 1 2010

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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