Performance of anode-supported proton-conducting solid oxide fuel cells with lanthanum-based thin bilayer electrolyte

H. Matsuo, G. Kojo, K. Sakata, Y. Matsuzaki, J. Otomo

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

4 Citations (Scopus)

Abstract

La-doped ceria (LaxCe4−xO8−x/2: LDC) is one of the promising proton-conducting oxides applicable for electrolytes of proton-conducting solid oxide fuel cells because of its high chemical stability against CO2 and H2O. In this report, we investigate composition dependence of conductivity of LDC ceramics with 1.0 ≤ x ≤ 3.0. Single-phase LDC was obtained for x ≤ 2.6 and the LDC ceramics with x = 2.6 exhibited the highest conductivity. Cell performance of an anode-supported cell with an LDC (x = 2.6) single-layer thin-film electrolyte was also evaluated. Moreover, the effect of stacking La28-yW4+yO54+3y/2v2-3y/2 (LWO) electrolyte with the LDC electrolyte on cell performance was examined. The bilayer cells, in which the LDC and the LWO electrolytes were stacked, exhibited higher open-circuit voltage values than the LDC single-layer cell because of suppressed leakage currents in the electrolyte. The bilayer structure will be an effective cell design to obtain high-performance p-SOFCs.

Original languageEnglish
Title of host publicationSolid Oxide Fuel Cells 16, SOFC 2019
EditorsK. Eguchi, S. C. Singhal
PublisherElectrochemical Society Inc.
Pages1019-1028
Number of pages10
Edition1
ISBN (Electronic)9781607688747, 9781607688747
DOIs
Publication statusPublished - 2019
Externally publishedYes
Event16th International Symposium on Solid Oxide Fuel Cells, SOFC 2019 - Kyoto, Japan
Duration: Sept 8 2019Sept 13 2019

Publication series

NameECS Transactions
Number1
Volume91
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference16th International Symposium on Solid Oxide Fuel Cells, SOFC 2019
Country/TerritoryJapan
CityKyoto
Period9/8/199/13/19

All Science Journal Classification (ASJC) codes

  • General Engineering

Fingerprint

Dive into the research topics of 'Performance of anode-supported proton-conducting solid oxide fuel cells with lanthanum-based thin bilayer electrolyte'. Together they form a unique fingerprint.

Cite this