BaCuGd{sub 2}O{sub 5}-BaCeO{sub 3} composite cathodes for barium cerate-based electrolytes
- Georgia Inst. of Tech., Atlanta, GA (United States). School of Materials Science and Engineering
Recent investigations into the mixed conducting properties of both copper- and gadolinium-doped barium cerates result in an interesting phase, identified as BaCuGd{sub 2}O{sub 5}, which exhibits substantially higher conductivity than any of the doped-barium cerate compounds studied. The predominant portion of the conduction, however, is electronic. Further, composites consisting of BaCuGd{sub 2}O{sub 5} and BaCe{sub 0.8}Gd{sub 0.2}O{sub 3} phases are studied as electrodes for barium cerate-based electrolytes. The composites are shown to have an ionic transference number of about 0.2. As electrodes, the composite material has shown excellent ambipolar transport properties and catalytic activities with interfacial resistances reduced by more than one order of magnitude compared to silver electrodes.
- Sponsoring Organization:
- National Science Foundation, Washington, DC (United States); Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 564114
- Journal Information:
- Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 11 Vol. 144; ISSN JESOAN; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
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