Development of intermediate temperature planar solid oxide fuel cells. Annual report, September 1992-1993
Dense, uniform thin films (0.5 - 0.2 micrometer) of LSCF, YSZ and LSM were deposited on dense or porous substrates at temperatures not exceeding 600 C. Cathode/electrolyte interaction studies revealed the formation of reaction products at the interface. The presence of a CSO buffer layer eliminated the interactions and decreased the interfacial resistance appreciably. Both LSCF and YCF systems have been evaluated and are considered potential cathode materials at reduced temperatures. They are chemically and structurally stable over a wide range of temperature and oxygen activity, they exhibit mixed conductivity and their thermal expansion coefficient can be made to match that of YSZ. Blocking electrode experiments revealed that the partial ionic conductivity of LSCF is comparable to that of YSZ. Single cells based on planar thin film design will be fabricated and tested.
- Research Organization:
- Missouri Univ., Rolla, MO (United States). Dept. of Ceramic Engineering
- OSTI ID:
- 7274781
- Report Number(s):
- PB-94-154945/XAB; CNN: GRI-5090-260-2069
- Resource Relation:
- Other Information: See also PB--93-232650
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CATHODES
PERFORMANCE TESTING
SOLID ELECTROLYTE FUEL CELLS
ELECTROLYTES
CALCIUM COMPOUNDS
COBALT COMPOUNDS
ELECTRODES
FERRITES
LANTHANUM COMPOUNDS
PROGRESS REPORT
STRONTIUM COMPOUNDS
THIN FILMS
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
DIRECT ENERGY CONVERTERS
DOCUMENT TYPES
ELECTROCHEMICAL CELLS
FERRIMAGNETIC MATERIALS
FILMS
FUEL CELLS
IRON COMPOUNDS
MAGNETIC MATERIALS
MATERIALS
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
TESTING
TRANSITION ELEMENT COMPOUNDS
300503* - Fuel Cells- Materials
Components
& Auxiliaries
300505 - Fuel Cells- Electrochemistry
Mass Transfer & Thermodynamics