Properties of La2-xPrxNiO4 cathode for intermediate-temperature solid oxide fuel cells

Shunsuke Nishimoto, Suguru Takahashi, Yoshikazu Kameshima, Motohide Matsuda, Michihiro Miyake

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

A series of K2NiF4-type compounds, La 2-xPrxNiO4 (x = 0, 0.6, 1.0, 1.4, and 2.0), were synthesized by solid state reaction for use as cathodes in an intermediate-temperature (500700° C) solid oxide fuel cell (IT-SOFC). La2-xPrxNiO4 (x = 0 and 0.6) crystallize in the Fmmm space group, while La2-xPrxNiO4 (x = 1.0, 1.4, and 2.0) belong to the Bmab space group. The electrical conductivity increased by Pr doping and La2-xPrxNiO4 (x = 0.6, 1.0, and 1.4) exhibited electrical conductivities similar to one another while Pr2NiO4 had the highest. Single test-cells consisting of samarium oxide doped ceria (SDC) as an electrolyte, NiSDC cermet as an anode and La2-xPrxNiO4 as a cathode, were fabricated for measurements of cell performance at 500700° C. Current interruption measurements revealed that the overpotential losses mainly decreased with increasing Pr content. Pr2NiO4 was found to exhibit the best cathode characteristics; maximum test-cell power densities of 14.1, 45.1, and 104.4mW/cm2 were obtained at 500, 600, and 700°C, respectively.

Original languageEnglish
Pages (from-to)246-250
Number of pages5
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume119
Issue number1387
Publication statusPublished - Mar 2011

Fingerprint

solid oxide fuel cells
Solid oxide fuel cells (SOFC)
Cathodes
cathodes
Cermet Cements
cells
Samarium
electrical resistivity
samarium
interruption
Cerium compounds
Electric current measurement
Solid state reactions
Temperature
Electrolytes
temperature
radiant flux density
Anodes
anodes
Doping (additives)

Keywords

  • Catalytic activity
  • Cathode
  • Electrical conductivity
  • IT-SOFC
  • KNiF-type structure

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry
  • Chemistry(all)
  • Condensed Matter Physics

Cite this

Properties of La2-xPrxNiO4 cathode for intermediate-temperature solid oxide fuel cells. / Nishimoto, Shunsuke; Takahashi, Suguru; Kameshima, Yoshikazu; Matsuda, Motohide; Miyake, Michihiro.

In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 119, No. 1387, 03.2011, p. 246-250.

Research output: Contribution to journalArticle

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