Improvement of electrochemical performance of anode-supported SOFCs by NiO-Ce0.9Gd0.1O1.95 nanocomposite powders

Changsheng Ding, Hongfei Lin, Kazuhisa Sato, Tatsuya Kawada, Junichiro Mizusaki, Toshiyuki Hashida

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

In this study, NiO-Ce0.9Gd0.1O1.95 (NiO-GDC) nanocomposite powders were synthesized by hydroxide co-precipitation method, and applied to improve the microstructure of solid oxide fuel cell (SOFC) anodes. The NiO-GDC anodes prepared from the NiO-GDC nanocomposite powders showed uniform microstructure with uniform distribution of NiO and GDC phases. Due to the uniform phase distribution, the Ni-GDC anodes prepared from the NiO-GDC nanocomposite powders had longer triple phase boundary (TPB), which resulted in enhanced electrochemical reactions. The anode-supported SOFC fabricated from the co-precipitated NiO-GDC nanocomposite powders exhibited higher electrochemical performance than the anode-supported SOFC fabricated from the mechanically mixed NiO-GDC nanopowders. The experimental results show that the use of the Ni-GDC anodes with uniform microstructure can effectively improve the electrochemical performance of anode-supported SOFC.

Original languageEnglish
Pages (from-to)1238-1243
Number of pages6
JournalSolid State Ionics
Volume181
Issue number25-26
DOIs
Publication statusPublished - 2010 Aug 26

Keywords

  • Anode microstructure
  • Nanocomposite powders
  • NiO-GDC
  • Power density
  • SOFC

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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