Thermally stable current-collecting silver grid coated with ceramic-capping layer for low-temperature solid oxide fuel cells. Issue 18 (15th December 2018)

• Record Type: Journal Article
• Authors: Hong, Soonwook; Lim, Yonghyun; Prinz, Fritz B.; Kim, Young-Beom
• Is Part Of: Ceramics international. Volume 44:Issue 18(2018)
• Page Start: 22212
• Page End: 22218
• Publication Date: 2018-12-15
• Subjects: Thermal barrier coating -- Samaria-doped ceria (SDC) -- Oxide-capping layer -- Silver current collector -- Low-temperature solid oxide fuel cells; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.08.340
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In an effort to decrease the operating temperature of solid oxide fuel cells (SOFCs), nano-porous thin Pt layers have been used as a cathode material with catalytic activity. Because of porous and thin characteristic of the Pt cathode, however, a large cathode area results in a significant performance deterioration because of the increased sheet resistance of the Pt cathode. In this study, we developed a Ag-patterned grid as a current-collecting layer and a samaria-doped ceria (SDC) oxide-capping layer on the porous Pt cathode to decrease sheet resistance and enhance electrochemical performance. Enhanced electron transportation and thermo-stable behavior of fabricated fuel cells indicated three-fold enhanced peak power density and more than two-fold thermomechanical stability, as per scanning electron microscopy (SEM) and electrochemical analysis results.