Ni-gdc and ni-ysz electrodes operated in solid oxide electrolysis and fuel cell modes

Anna Sciazko, Takaaki Shimura, Yosuke Komatsu, Naoki Shikazono

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

In the present study, solid oxide cells (SOCs) were operated in the electricity generation (solid oxide fuel cell, SOFC) mode and the hydrogen production (solid oxide electrolysis cell, SOEC) mode. The fuel electrodes fabricated with nickel-gadolinia doped ceria (Ni-GDC) and nickel-yttria stabilized zirconia (Ni-YSZ) composites were investigated. The correlations between changes in the microstructure and degradation of electrochemical performance are discussed. The degradation mechanisms correlated with Ni phase were found to be similar for Ni-GDC and Ni-YSZ electrodes. On the other hand, the stability of the ceramic phase differs significantly between the two electrode materials.

Original languageEnglish
Article numberJTST0013
Pages (from-to)1-10
Number of pages10
JournalJournal of Thermal Science and Technology
Volume16
Issue number1
DOIs
Publication statusPublished - 2021

Keywords

  • Degradation
  • Electrolysis
  • FIB-SEM
  • Fuel cell
  • Microstructure
  • Mixed conductivity
  • Ni-GDC electrode
  • Ni-YSZ electrode
  • Solid oxide cell

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Instrumentation
  • Engineering (miscellaneous)

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