Current collect properties in micro tubular solid oxide fuel cell (2) (Investigation of cathode current collecting method)

Naoki Watanabe, Akira Kawakami, Toshiharu Oe, Nobuyasu Reisen, Tatsumi Ishihara

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Current collecting property in micro tubular solid oxide fuel cell (SOFC) was evaluated by using electrochemical impedance spectroscopy. A micro tubular cell was composed of NiO/(ZrO2)0.9(Y2O 3)0.1 anode-substrate, (Ce0.6Lao 0.4)O1.8 and La0.8Sr0.2Ga 0.8Mg0.2O2.8 double layer electrolyte, and La0.6Sr0.4Co0.2Fe0.8O3 cathode. The effects of different current collecting types, i.e., short-current path or long-current path were discussed. These results were simulated to the equivalent circuit consisting of four resistances and three capacitances, and accuracy of these estimated values were investigated in nonlinear least square techniques. As the results, short-current path type showed high performance and ohmic resistance was dependent of current collect types.

Original languageEnglish
Pages (from-to)671-677
Number of pages7
JournalElectrochemistry
Volume78
Issue number8
DOIs
Publication statusPublished - Aug 2010

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All Science Journal Classification (ASJC) codes

  • Electrochemistry

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