Strain effects in YSZ thin films by elastic waves

Y. Miyoshi, F. Iguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The increase in direct current of yttria-stabilized zirconia (YSZ), which is an oxygen ionic conductor, by time-varying the strain produced by elastic waves was experimentally demonstrated. A piezo actuator was located outside of a furnace, and was used to introduce elastic waves into YSZ thin films deposited on a SiO2 bar in the furnace. Moreover, the effect of the elastic waves on the behavior of the direct current when constant voltage was applied to the YSZ films was observed. As strain increased, the direct current linearly increased at the rate of 1% for the stress application of 1 MPa at approximately 630 °C. This result considered to be due to the asymmetric strain effects in YSZ. Observed strain effects suggested the possibility of a new technology that could use elastic waves to improve the performance of high-temperature electrochemical devices, such as solid oxide fuel cells and solid oxide electrolysers.

Original languageEnglish
Title of host publicationSolid Oxide Fuel Cells 16, SOFC 2019
EditorsK. Eguchi, S. C. Singhal
PublisherElectrochemical Society Inc.
Number of pages8
ISBN (Electronic)9781607688747, 9781607688747
Publication statusPublished - 2019
Event16th International Symposium on Solid Oxide Fuel Cells, SOFC 2019 - Kyoto, Japan
Duration: 2019 Sep 82019 Sep 13

Publication series

NameECS Transactions
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862


Conference16th International Symposium on Solid Oxide Fuel Cells, SOFC 2019

ASJC Scopus subject areas

  • Engineering(all)


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