Functionally Graded Bismuth Oxide/Zirconia Bilayer Electrolytes for High-Performance Intermediate-Temperature Solid Oxide Fuel Cells (IT-SOFCs)

• DOI: 10.1021/acsami.6b16660
• Publication Date: 2017-03-01T17:13:48Z
• Authors: Dong Woo Joh; Jeong Hwa Park; Doyeub Kim; Eric D. Wachsman; Kang Taek Lee
• Keywords: Bismuth

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 highly enhanced oxygen incorporation at cathode/electrolyte interface, novel solid oxide fuel cell (SOFC) yields extremely high power density ∼2.1 W cm–2 700 °C, which 2.4 times increase compared to that YSZ single SOFC.