title: Functionally Graded Bismuth Oxide/Zirconia Bilayer Electrolytes for High-Performance Intermediate-Temperature Solid Oxide Fuel Cells (IT-SOFCs).
abstract: A functionally graded Bi1.6Er0.4O3(ESB)/Y0.16Zr0.84O1.92(YSZ) bilayer electrolyte is successfully developed via a cost-effective screen printing process using nanoscale ESB powders on the tape-cast NiO-YSZ anode support. Because of the highly enhanced oxygen incorporation process at the cathode/electrolyte interface, a novel bilayer solid oxide fuel cell (SOFC) yields extremely high power density of ∼2.1 W cm-2at 700 °C, which is a 2.4 times increase compared to that of the YSZ single electrolyte SOFC.
authors.affiliation: Department of Energy Systems Engineering, DGIST , Daegu 42988, Korea.
authors.forename: Dong Woo
authors.initials: DW
authors.lastname: Joh
authors.affiliation: Department of Energy Systems Engineering, DGIST , Daegu 42988, Korea.
authors.forename: Jeong Hwa
authors.initials: JH
authors.lastname: Park
authors.affiliation: Department of Energy Systems Engineering, DGIST , Daegu 42988, Korea.
authors.forename: Doyeub
authors.initials: D
authors.lastname: Kim
authors.affiliation: University of Maryland Energy Research Center, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Eric D
authors.initials: ED
authors.lastname: Wachsman
authors.affiliation: Department of Energy Systems Engineering, DGIST , Daegu 42988, Korea.
authors.forename: Kang Taek
authors.identifier: http://orcid.org/0000-0002-3067-4589
authors.initials: KT
authors.lastname: Lee
keywords: bilayers; electrolytes; high performance; solid oxide fuel cells; stabilized bismuth oxides