SOFC chromite sintering and electrolyte/air-electrode interface reactions

Conference · Wed Apr 01 04:00:00 EST 1992

OSTI ID:10136036

Bates, J L; Chick, L A; Youngblood, G E

Air sintering of chromites was investigated in La(Sr)CrO{sub 3}, La(Ca)CrO{sub 3}, and Y(Ca)CrO{sub 3}. Effects of alkaline earth dopant level and chromium enrichment/depletion on chromite sintered densities and microstructures are discussed. Ac impedance spectroscopy and dc polarization coupled with an unbonded interface cell were used to examine SOFC (solid oxide fuel cells) electrochemical reactions at solid-solid-gas interfaces, particularly for La{sub 1-x}Sr{sub x}MnO{sub 3}. 5 refs.

• Research Organization: Pacific Northwest Lab., Richland, WA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 10136036
• Report Number(s): PNL-SA--20784; CONF-9204231--1; ON: DE93008260
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300503
300505
CALCIUM ADDITIONS
CHROMIUM OXIDES
ELECTROCHEMISTRY
ELECTROCHEMISTRY, MASS TRANSFER, AND THERMODYNAMICS
INTERFACES
LANTHANUM COMPOUNDS
MANGANATES
MATERIALS
MATERIALS, COMPONENTS, AND AUXILIARIES
SINTERING
SOLID ELECTROLYTE FUEL CELLS
STRONTIUM ADDITIONS
YTTRIUM COMPOUNDS