Metallizing porous scaffolds as an alternative fabrication method for solid oxide fuel cell anodes

Enrique Ruiz-Trejo*, Alan Atkinson, Nigel P. Brandon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

A combination of electroless and electrolytic techniques is used to incorporate nickel into a porous Ce0.9Gd0.1O1.90 scaffold. First a porous backbone was screen printed into a YSZ electrolyte using an ink that contains sacrificial pore formers. Once sintered, the scaffold was coated with silver using Tollens' reaction followed by electrodeposition of nickel in a Watts bath. At high temperatures the silver forms droplets enabling direct contact between the gadolinia-doped ceria and nickel. Using impedance spectroscopy analysis in a symmetrical cell a total area specific resistance of 1 Omega cm(2) at 700 degrees C in 97% H-2 with 3% H2O was found, indicating the potential of this fabrication method for scaling up. (C) 2015 The Authors. Published by Elsevier B.V.

Original languageEnglish
Pages (from-to)81-89
Number of pages9
JournalJournal of Power Sources
Volume280
DOIs
Publication statusPublished - 15 Apr 2015

Keywords

  • SOFC anodes
  • Electrodeposition
  • Electroless deposition
  • Nickel infiltration
  • SOFC ANODES
  • DOPED CERIA
  • ELECTRODES
  • ZIRCONIA
  • CONDUCTIVITY
  • IMPREGNATION
  • PERFORMANCE
  • OXIDATION

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