X-ray Computed Tomography Investigation of Mechanical Behavior of Anode-Supported SOFCs during the Redox Cycle Using X-ray CT Method

摘要

The mechanical behavior of an anode-supported cell during reoxidation at high temperature was investigated using an X-ray computed tomography (CT) method. During reoxidation with no seal, warping of the anode-supported cell increased and a critical crack was seen at 1023 K in the CT images. The mechanical behavior and open-circuit voltage (OCV) of the cell with a seal during reoxidation was also investigated. In the CT images, cracks were found in the electrolyte at 1023 K during reduction. The OCV decreased during reduction, and the value was unstable after the crack generation.