Solid compositions for fuel cells, sensors and catalysts

Patent · Tue Jul 25 00:00:00 EDT 1989

OSTI ID:5385212

Madou, M J; Otagawa, T; Sher, A

This patent describes a use of a solid material as an electrolyte for a fuel cell. Each solid material having a polycrystal or single crystal structure, comprising: a structure of the formula: AF/sub 3/ wherein A is independently selected from lanthanmun, cerium, neodymium, praseodymium, scandium, or mixtures thereof; wherein AF/sub 3/ is a single crystal or portion thereof; or a structure of the formula: A/sub y/B/sub 1-y/F/sub 2/+y wherein: A as defined above, B is independently selected from strontium, calcium, barium or magnesium, and y is between about 0.0001 and 1. Here the solid material as an electrolyte is a thin layer having one side coated with a noble metal which is in contact with a gaseous fuel for a fuel cell and the other side of the thin solid material for the electrolyte is also coated with a noble metal which is in contact with gaseous oxygen, or air or mixtures therof.

• Assignee: SRI-International, Menlo Park, CA
• Patent Number(s): US 4851303
• Application Number: PPN: US 6935289A
• OSTI ID: 5385212
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300503* -- Fuel Cells-- Materials
Components
& Auxiliaries
ALKALINE EARTH METALS
BARIUM
CALCIUM
CATALYSTS
CERIUM
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTROLYTES
ELEMENTS
FUEL CELLS
LANTHANUM
MAGNESIUM
METALS
NEODYMIUM
PRASEODYMIUM
RARE EARTHS
SCANDIUM
SOLID ELECTROLYTES
STRONTIUM
TRANSITION ELEMENTS