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 Lab., 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
- Country of Publication:
- United States
- Language:
- English
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Alternative materials for solid oxide fuel cells: Factors affecting air-sintering of chromite interconnections
SOFC materials development: Chromite interconnections
Related Subjects
300503
36 MATERIALS SCIENCE
360200
CALCIUM OXIDES
CATHODES
CERAMICS, CERMETS, AND REFRACTORIES
CHEMICAL COMPOSITION
CHROMIUM OXIDES
CONNECTORS
DENSITY
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
EXPERIMENTAL DATA
LANTHANUM OXIDES
MANGANESE OXIDES
MATERIALS
MATERIALS, COMPONENTS, AND AUXILIARIES
MICROSTRUCTURE
PHASE STUDIES
REDOX REACTIONS
SINTERING
SOLID ELECTROLYTE FUEL CELLS
STRONTIUM OXIDES
SWELLING
VACANCIES