Application of in-situ Raman scattering spectroscopy for stress condition measurement in solid oxide fuel cells

作者：Iguchi Fumitada^*; Onuki Shoma; Shimizu Makoto; Kawada Tatsuya; Yugami Hiroo

来源：Journal of the Ceramic Society of Japan, 2017, 125(4): 213-217.

DOI：10.2109/jcersj2.16275

• In-plane stress
• Multilayered structure
• Thermal stress
• Rare earth doped ceria

A feasible study for an in-situ stress evaluation method for solid oxide fuel cells based on Raman scattering spectroscopy was performed using two anode-supported cells with a cathode interlayer made from Samarium (Sm) doped ceria. Model cells with a dense cathode interlayer demonstrated a compressive stress of -100s MPa at room temperature, and the results were comparable to those from X-ray diffraction. Model cells with a porous interlayer showed complex stress conditions that deviated from in-plane stress due to their porosity, and the model cell was confirmed not to be suitable for this method. At high temperatures, compressive stress was found to decrease as temperature increased and was almost neutral at the operating temperatures of the fuel cell, with good replication. Hence, the feasibility of this method for model cells with a dense cathode interlayer was confirmed.

• 出版日期2017-4