Durability of SOFCs using inexpensive Ca-doped ZrO2 electrolytes

Y. Toyofuku, T. Hosoi, T. Kawabata, Y. Shiratori, S. Taniguchi, K. Sasaki

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


For the further commercialization of SOFCs, the cost reduction for materials is one of the most important technological issues. Currently, Y or Sc is widely used as a dopant of zirconia-based electrolytes, but these rare-earth elements are relatively expensive. In this study, we have examined the possibility to use Ca as an alternative dopant since it is abundant in the earth and inexpensive. We have experimentally found that Ca diffusion is relatively fast, causing cell performance degradation. Even so, such fast diffusion could be depressed by decreasing the concentration gradient of Ca dopant, leading to an improvement in the durability.

Original languageEnglish
Pages (from-to)807-813
Number of pages7
JournalECS Transactions
Issue number1
Publication statusPublished - 2013

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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