Continuous Hydrothermal Flow Synthesis of Gd-doped CeO2 (GDC) Nanoparticles for Inkjet Printing of SOFC Electrolytes

Yu Xu, Nicholas M. Farandos, Massimo Rosa, Philipp Zielke, Vincenzo Esposito, Peter Vang Hendriksen, Søren Højgaard Jensen, Tao Li, Geoffrey H. Kelsall, Wolff-Ragnar Kiebach

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GdxCe1-xO2-δ (GDC) nanoparticles were synthesized using continuous hydrothermal flow synthesis. By varying the synthesis conditions, particle size and morphology could be tailored. Here, particle sizes between 6 to 40 nm with polyhedral or octahedral shape could be obtained. Gd0.2Ce0.8O2-δ nanoparticles were further processed into inks for inkjet printing. Despite the small particle size/large surface area, inks with excellent printing behavior were formulated. For proof-of-concept, thin GDC layers were printed on a) green NiO-GDC substrates, and on b) pre-sintered NiO-YSZ substrates. While no dense layers could be obtained on the green NiO-GDC substrates, GDC nanoparticles printed on NiO-YSZ substrates formed a dense continuous layer after firing at 1300 °C.
Original languageEnglish
JournalInternational Journal of Applied Ceramic Technology
Issue number2
Pages (from-to)315-327
Publication statusPublished - 2018


  • Continuous flow synthesis
  • Hydrothermal
  • Supercritical water
  • Gadolinium doped ceria
  • Inkjet printing
  • SOFC
  • Electrolyte
  • Solid oxide fuel cell

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