Performance of BaZrO3 based proton conductors as an electrolyte for intermediate temperature operating SOFC

F. Iguchi, T. Tokikawa, T. Miyoshi, T. Tsurui, Y. Nagao, N. Sata, H. Yugami

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

11 Citations (Scopus)

Abstract

Investigative results of Y concentration dependence of total conductivity, and testing results of self-supported cells, gave us knowledge to realize intermediate temperature operating SOFCs using Y-doped BaZrO3 proton conductors. An increase of Y concentration improved electrical properties of grain boundaries drastically. As a result, total conductivity of a 15mol% Y doped BaZiO3 sample in wet air and wet Ar showed 5mScm-1 at 400°C The performance of the self-supported cells was very low because of high electrolyte resistance caused by those thicknesses. Open circuit voltage (OCV) was over IV in the temperature range of 600°C to 400°C in spite of low ionic transparent number in wet air at 600°C Degradation of electrolytes was not observed during tests. From those results, electrode-supported cells using Y-doped BaZrO3 will show sufficient cell performance for intermediate temperature SOFCs.

Original languageEnglish
Title of host publicationECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
Pages2331-2336
Number of pages6
Edition1 PART 2
DOIs
Publication statusPublished - 2007 Dec 1
Event10th International Symposium on Solid Oxide Fuel Cells, SOFC-X - , Japan
Duration: 2007 Jun 32007 Jun 8

Publication series

NameECS Transactions
Number1 PART 2
Volume7
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
CountryJapan
Period07/6/307/6/8

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'Performance of BaZrO<sub>3</sub> based proton conductors as an electrolyte for intermediate temperature operating SOFC'. Together they form a unique fingerprint.

Cite this