Tracking the Onset of Damage Mechanism in Ceria-based Solid Oxide Fuel Cells under Simulated Operating Conditions

    Volume 34, Issue 3 (May 2006)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Published Online: 18 January 2006

    Page Count: 5


    Sato, K
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai,

    Omura, H
    Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University Aza-Aoba, Sendai,

    Hashida, T
    Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University Aza-Aoba, Sendai,

    Yashiro, K
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai,

    Yugami, H
    Graduate School of Engineering, Tohoku University, Sendai,

    Kawada, T
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai,

    Mizusaki, J
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai,

    (Received 28 August 2004; accepted 6 October 2005)

    Abstract

    A simple mechanical damage testing method, combined with Acoustic Emission (AE) monitoring was developed in order to investigate the mechanical performance of solid oxide fuel cells under simulated environments. The damage testing method was applied to ceria electrolyte-supported single cells. The damage process was shown to involve vertical cracking and de lamination in the cathode, and vertical cracking in the electrolyte, and the fracture damage was most likely due to chemical expansion-induced stresses. It was demonstrated that the AE method enabled us to detect the above-mentioned damage process and to determine the condition for the onset of the damage in the single cell.


    Paper ID: JTE12707

    DOI: 10.1520/JTE12707

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    Author
    Title Tracking the Onset of Damage Mechanism in Ceria-based Solid Oxide Fuel Cells under Simulated Operating Conditions
    Symposium , 0000-00-00
    Committee C28