SOFC chromite sintering and electrolyte/air-electrode interface reactions

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

OSTI ID:6664139

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: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6664139
• 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* -- Fuel Cells-- Materials
Components
& Auxiliaries
300505 -- Fuel Cells-- Electrochemistry
Mass Transfer & Thermodynamics
ALLOYS
CALCIUM ADDITIONS
CALCIUM ALLOYS
CHALCOGENIDES
CHEMISTRY
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
FABRICATION
FUEL CELLS
INTERFACES
LANTHANUM COMPOUNDS
MANGANATES
MANGANESE COMPOUNDS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
SINTERING
SOLID ELECTROLYTE FUEL CELLS
STRONTIUM ADDITIONS
STRONTIUM ALLOYS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS