Robust SOFC anode materials with La-doped SrTiO3 backbone structure

Xuesong Shen, Kazunari Sasaki

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Redox-stable Sr0.9La0.1TiO3 (SLT) with Ce0.9Gd0.1O2 (GDC) and (Sc2O3)0.1(CeO2)0.01(ZrO2)0.89 (SSZ) was used to fabricate robust anodes for zirconia-based electrolyte-supported SOFCs. The anode consisted of three layers: a layer of 60wt% GDC-40wt% SLT or 40wt% SSZ-60wt% SLT as a functional layer and two layers of SLT as current conducting layers. An impregnation method has been employed to decorate nano-sized Ni and CeO2 into the ceramic anode to improve electrochemical performance and redox stability. It was found that the catalyst impregnated ceramic anode has improved redox stability compared with the conventional Ni-SSZ cermet. The incorporation of the oxide catalyst, CeO2, during co-impregnation process was found to even further improve redox stability of the anode, since CeO2 particles have a lower tendency to aggregate during redox cycling.

Original languageEnglish
Pages (from-to)17044-17052
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume41
Issue number38
DOIs
Publication statusPublished - Oct 15 2016

Fingerprint

Solid oxide fuel cells (SOFC)
Anodes
anodes
Impregnation
ceramics
catalysts
Catalysts
zirconium oxides
Zirconia
tendencies
Electrolytes
Oxidation-Reduction
electrolytes
conduction
cycles
Oxides
oxides

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Robust SOFC anode materials with La-doped SrTiO3 backbone structure. / Shen, Xuesong; Sasaki, Kazunari.

In: International Journal of Hydrogen Energy, Vol. 41, No. 38, 15.10.2016, p. 17044-17052.

Research output: Contribution to journalArticle

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abstract = "Redox-stable Sr0.9La0.1TiO3 (SLT) with Ce0.9Gd0.1O2 (GDC) and (Sc2O3)0.1(CeO2)0.01(ZrO2)0.89 (SSZ) was used to fabricate robust anodes for zirconia-based electrolyte-supported SOFCs. The anode consisted of three layers: a layer of 60wt{\%} GDC-40wt{\%} SLT or 40wt{\%} SSZ-60wt{\%} SLT as a functional layer and two layers of SLT as current conducting layers. An impregnation method has been employed to decorate nano-sized Ni and CeO2 into the ceramic anode to improve electrochemical performance and redox stability. It was found that the catalyst impregnated ceramic anode has improved redox stability compared with the conventional Ni-SSZ cermet. The incorporation of the oxide catalyst, CeO2, during co-impregnation process was found to even further improve redox stability of the anode, since CeO2 particles have a lower tendency to aggregate during redox cycling.",
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