Comparative Evaluation of Spark Plasma and Conventional Sintering of NiO/YSZ Layers for Metal-Supported Solid Oxide Fuel Cells

A. S. Ivashutenko, I. V. Ionov, A. S. Maznoy, A. A. Sivkov, A. A. Solovyev

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

NiO/YSZ anode layers for metal-supported solid oxide fuel cells (MS-SOFCs) were fabricated by spark plasma sintering (SPS). SPS parameters were optimized in order to achive anodes of the desired microstructure. The effect of sintering conditions on microstructure of NiO/YSZ was studied by scanning electron microscopy and X-ray diffractometry. Also NiO/YSZ layers were formed on porous metal supports by a screen-printing method and sintered in inert atmosphere and vacuum by conventional sintering technique. At temperatures above 1,200°? in inert atmosphere and vacuum nickel oxide dissociation and its massive agglomeration are observed during conventional sintering. SPS process allows sintering of NiO/YSZ granules without NiO dissociation, Ni agglomeration and the metal substrate oxidation at 1,100°?. SPS sintered anodes demonstrate sufficiently homogeneous distribution of NiO and YSZ making a conduction path for electrons and ions. Well-bonded metal support/anode interface was obtained.

Original languageEnglish
JournalHigh Temperature Materials and Processes
Volume37
Issue number4
DOIs
Publication statusPublished - 26 Mar 2018

Keywords

  • anode
  • cermet
  • microstructure
  • solid oxide fuel cell
  • spark plasma sintering

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Physical and Theoretical Chemistry

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