Effects of Ce0.6Mn0.3Fe0.1O2-δ interlayer on electrochemical properties of microtubular SOFC using doped LaGaO3 electrolyte

Kohei Hosoi, Takaaki Sakai, Shintaro Ida, Tatsumi Ishihara

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Effects of Ce0.6Mn0.3Fe0.1O2-δ (CMF) anodic interlayer on power generation properties of microtubular SOFC using doped La0.9Sr0.1Ga0.8Mg0.2O3 (LSGM) electrolyte were investigated. Two types of microtubular cells, which were used NiOCe0.8Gd0.2O2-δ (GDC) cerment for anode porous substrate, were prepared with (A-cell) or without (B-cell) CMF interlayer by dip-coating method. The power generation properties of A- and B-cell sintered at 1623 K were measured. It was revealed that A-cell showed about 40% higher power density (1 W/cm2 at 973 K) than that of B-cell at temperature from 873 to 973 K because of the decreased electrode polarization by introducing CMF anodic interlayer. It was found that the diffusion of Ni into LSGM/Ti-LDC (Ce0.6La0.4O2-δ added with 0.5 wt% TiO2) interlayer was much suppressed by CMF interlayer (A-cell). This is because Ni was trapped in the CMF interlayer and formed Ni-CMF composite layer. Decrease in the polarization resistance might be assigned to the formation of Ni-CMF composite layer. Thus, CMF is promising for increasing the power generation property of microtubular SOFC using LSGM electrolyte prepared by dip coating method.

Original languageEnglish
Pages (from-to)F1379-F1383
JournalJournal of the Electrochemical Society
Volume162
Issue number12
DOIs
Publication statusPublished - 2015

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Solid oxide fuel cells (SOFC)
Electrochemical properties
Electrolytes
Power generation
interlayers
Cells
electrolytes
Polarization
Coatings
Composite materials
cells
coating
Anodes
Electrodes
composite materials
Substrates
polarization
radiant flux density
anodes
Temperature

All Science Journal Classification (ASJC) codes

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

Cite this

Effects of Ce0.6Mn0.3Fe0.1O2-δ interlayer on electrochemical properties of microtubular SOFC using doped LaGaO3 electrolyte. / Hosoi, Kohei; Sakai, Takaaki; Ida, Shintaro; Ishihara, Tatsumi.

In: Journal of the Electrochemical Society, Vol. 162, No. 12, 2015, p. F1379-F1383.

Research output: Contribution to journalArticle

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abstract = "Effects of Ce0.6Mn0.3Fe0.1O2-δ (CMF) anodic interlayer on power generation properties of microtubular SOFC using doped La0.9Sr0.1Ga0.8Mg0.2O3 (LSGM) electrolyte were investigated. Two types of microtubular cells, which were used NiOCe0.8Gd0.2O2-δ (GDC) cerment for anode porous substrate, were prepared with (A-cell) or without (B-cell) CMF interlayer by dip-coating method. The power generation properties of A- and B-cell sintered at 1623 K were measured. It was revealed that A-cell showed about 40{\%} higher power density (1 W/cm2 at 973 K) than that of B-cell at temperature from 873 to 973 K because of the decreased electrode polarization by introducing CMF anodic interlayer. It was found that the diffusion of Ni into LSGM/Ti-LDC (Ce0.6La0.4O2-δ added with 0.5 wt{\%} TiO2) interlayer was much suppressed by CMF interlayer (A-cell). This is because Ni was trapped in the CMF interlayer and formed Ni-CMF composite layer. Decrease in the polarization resistance might be assigned to the formation of Ni-CMF composite layer. Thus, CMF is promising for increasing the power generation property of microtubular SOFC using LSGM electrolyte prepared by dip coating method.",
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N2 - Effects of Ce0.6Mn0.3Fe0.1O2-δ (CMF) anodic interlayer on power generation properties of microtubular SOFC using doped La0.9Sr0.1Ga0.8Mg0.2O3 (LSGM) electrolyte were investigated. Two types of microtubular cells, which were used NiOCe0.8Gd0.2O2-δ (GDC) cerment for anode porous substrate, were prepared with (A-cell) or without (B-cell) CMF interlayer by dip-coating method. The power generation properties of A- and B-cell sintered at 1623 K were measured. It was revealed that A-cell showed about 40% higher power density (1 W/cm2 at 973 K) than that of B-cell at temperature from 873 to 973 K because of the decreased electrode polarization by introducing CMF anodic interlayer. It was found that the diffusion of Ni into LSGM/Ti-LDC (Ce0.6La0.4O2-δ added with 0.5 wt% TiO2) interlayer was much suppressed by CMF interlayer (A-cell). This is because Ni was trapped in the CMF interlayer and formed Ni-CMF composite layer. Decrease in the polarization resistance might be assigned to the formation of Ni-CMF composite layer. Thus, CMF is promising for increasing the power generation property of microtubular SOFC using LSGM electrolyte prepared by dip coating method.

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