Ag current collector for honeycomb solid oxide fuel cells using LaGaO3-based oxide electrolyte

Hao Zhong, Hiroshige Matsumoto, Tatsumi Ishihara, Akira Toriyama

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Honeycomb type solid oxide fuel cell (SOFC) using a Ag mesh as a current collector and La0.9Sr0.1Ga0.8Mg0.2O3 (LSGM) as an electrolyte was studied for reducing production cost. When an Ag mesh was used as a current collector, the power density of the cell became lower than that of a cell using a Pt mesh due to the relatively worse contact caused by the lower calcination temperature, particularly in the case of the anode. The preparation method and the electrode structure were investigated for the purpose of increasing the power density of the cell using the Ag current collector. It was found that an interlayer of Ni-Sm0.2Ce0.8O1.9 (1:9) between the NiFe-LSGM cermet anode and the LSGM electrolyte was effective for decreasing the pre-calcination temperature for anode fabrication. Much higher power densities of 300 mW cm-2 and 140 mW cm-2 at 1073 K and 973 K, respectively, were achieved by inserting an interlayer. These results for the power density of the cell using the Ag mesh current collector after the optimization of the electrode structure and the preparation procedure are close to those of the cell using the Pt mesh current collector cell presented in our previous work.

Original languageEnglish
Pages (from-to)238-243
Number of pages6
JournalJournal of Power Sources
Volume186
Issue number2
DOIs
Publication statusPublished - Jan 15 2009

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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