Role of Cathode in Single Chamber SOFC

Abstract

The role of the catalytic activity of the cathode materials on the open circuit voltage (OCV) of single chamber solid oxide fuel cell (SC-SOFC) was investigated. Ni-cermet has been proven to be as a very efficient catalyst for fuel and used as anode. On the other hand, typical cathode materials (perovskrte oxides) are also known as catalytically active for fuel oxidation and therefore affect the OCV of the cell. Cells with a mixture of doped ceria and (La, Sr)(Co, Fe)O3 (LSCF) as cathode, and Ag as reference electrode on doped ceria electrolyte (SDC) were prepared and tested in single chamber configuration. The OCV increased as SDC content decreased and reached values as high as 0.1V for pure LSCF. A power density of ~ 140 mW/cm2 was obtained at 600°C using Ni-cermet anode and LSCF-10% SDC cathode.

Meeting Name

28th International Conference on Advanced Ceramics and Composites (2004: Jan. 25-30, Cocoa Beach, FL)

Department(s)

Materials Science and Engineering

Keywords and Phrases

Catalyst activity; Electrolytes; Oxidation; Perovskite; Solid oxide fuel cells; Voltage control; Chamber configuration; Fuel oxidation; Reference electrodes, Cathodes

International Standard Serial Number (ISSN)

0196-6219

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2004 Wiley-Blackwell, All rights reserved.

Publication Date

01 Jan 2004

Link to Full Text

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