Alternative materials for solid oxide fuel cells
The purpose of this research is to develop alternative materials for solid oxide fuel cell (SOFC) interconnections and electrodes with improved electrical, thermal, and electrochemical properties. A second objective is to develop synthesis and fabrication methods for these materials whereby they can be processed in air into SOFCs. The approach is to (1) develop modifications of the current, state-of-the-art materials used in SOFCs, (2) minimize the number of cations used in the SOFC materials to reduce potential deleterious interactions, (3) improve thermal, electrical, and electrochemical properties, (4) develop methods to synthesize both state-of-the-art and alternative materials for the simultaneous fabrication and consolidation in air of the interconnections and electrodes with the solid electrolyte, and (5) understand electrochemical reactions at materials interfaces and the effects of component composition and processing on those reactions. This paper summarizes a comprehensive study that assessed the effect of ambient oxygen partial pressure on the stability of air-sinterable chromites and the sintering behavior of doped lanthanum manganites.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 10181035
- Report Number(s):
- PNL-SA-24680; CONF-940883-6; ON: DE94018452; TRN: AHC29421%%12
- Resource Relation:
- Conference: Fuel cells `94,Morgantown, WV (United States),17-19 Aug 1994; Other Information: PBD: Aug 1994
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
SOLID ELECTROLYTE FUEL CELLS
CATHODES
CONNECTORS
MATERIALS
CHROMIUM OXIDES
SWELLING
MANGANESE OXIDES
SINTERING
LANTHANUM OXIDES
CALCIUM OXIDES
STRONTIUM OXIDES
CHEMICAL COMPOSITION
VACANCIES
ELECTRIC CONDUCTIVITY
MICROSTRUCTURE
REDOX REACTIONS
DOPED MATERIALS
EXPERIMENTAL DATA
DENSITY
PHASE STUDIES
300503
360200
MATERIALS, COMPONENTS, AND AUXILIARIES
CERAMICS, CERMETS, AND REFRACTORIES