High-Performance Solid Oxide Electrochemical Cells with Ultrathin and Dense Double-Doped Ceria Interlayers

Abstract

In this study, we utilized a La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF)-GDC composite oxygen electrode on a thin and dense doubly doped ceria interlayer for a high-performance solid oxide electrochemical cell (SOC). The ceria interlayers were generated via a non-vacuum solution deposition process with gelatin. The SOC achieved a high maximum power density (MPD) of 2.46 W/cm2 at 750oC along with stable operation for 30 hours in the fuel cell (FC) mode. Our results suggest that the integration of the LSCF-GDC composite and the dense ceria interlayer holds a significant promise for development of high-performance SOCs.