Anode-supported SOFCs based on Sm0.2Ce0.8O2−δ electrolyte thin-films fabricated by co-pressing using microwave combustion synthesized powders. Issue 3 (15th February 2016)

• Record Type: Journal Article
• Authors: Sun, Haibin; Zhang, Yujun; Gong, Hongyu; Li, Qisong; Bu, Yunfei; Li, Teng
• Is Part Of: Ceramics international. Volume 42:Issue 3(2016)
• Page Start: 4285
• Page End: 4289
• Publication Date: 2016-02-15
• Subjects: A. Films -- D. CeO2 -- E. Fuel cells -- Microwave combustion; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2015.11.105
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Decreasing the electrolyte thickness is an effective approach to improve solid oxide fuel cells (SOFCs) performance for intermediate-temperature applications. Sm0.2 Ce0.8 O2− δ (SDC) powders with low apparent density of 32±0.3 mg cm −3 are synthesized by microwave combustion method, and SDC electrolyte films as thin as ~10 μm are fabricated by co-pressing the powders onto a porous NiO–SDC anode substrate. Dense SDC electrolyte thin films with grain size of 300–800 nm are achieved at a low co-firing temperature of 1200 °C. Single cells based on SDC thin films show peak power densities of 0.86 W cm −2 at 650 °C using 3 vol% humidified H2 as fuel and ambient air as oxidant. Both the thin thickness of electrolyte films and ultra-fine grained anode structure make contributions to the improved cell performance.