Nickel-Gd-doped CeO 2 cermet anode for intermediate temperature operating solid oxide fuel cells using LaGaO 3 -based perovskite electrolyte

Tatsumi Ishihara, Takaaki Shibayama, Hiroyasu Nishiguchi, Yusaku Takita

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

Ni-CeO 2 doped with 20 mol.% Gd 3+ (GDC) cermet was investigated as the anode of an intermediate temperature operating solid oxide fuel cell using LaGaO 3 -based oxide electrolyte. It was found that the anodic overpotential decreased by mixing Ni with mixed electronic-ionic conductor, in-particular, mixing with doped CeO 2 is the most effective for decreasing the overpotential of the anode. Anodic overpotential became a minimum at 10 vol.% GDC to NiO. Using Ni-GDC cermet is also effective for improving the stability of the power density at the constant current output. Impedance analysis suggests that the improvement of anodic activity by mixing Ni with GDC was brought about by decreasing the diffusion overpotential, which was a result of the enlarged effective electrode area.

Original languageEnglish
Pages (from-to)209-216
Number of pages8
JournalSolid State Ionics
Volume132
Issue number3
Publication statusPublished - Jul 2 2000
Externally publishedYes

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Cermet Cements
solid oxide fuel cells
Solid oxide fuel cells (SOFC)
Nickel
operating temperature
Perovskite
Electrolytes
Anodes
anodes
nickel
electrolytes
Temperature
Oxides
radiant flux density
conductors
impedance
Electrodes
electrodes
oxides
output

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Nickel-Gd-doped CeO 2 cermet anode for intermediate temperature operating solid oxide fuel cells using LaGaO 3 -based perovskite electrolyte . / Ishihara, Tatsumi; Shibayama, Takaaki; Nishiguchi, Hiroyasu; Takita, Yusaku.

In: Solid State Ionics, Vol. 132, No. 3, 02.07.2000, p. 209-216.

Research output: Contribution to journalArticle

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