Oxygen sensor and high temperature fuel cells

Patent · Tue Jul 31 00:00:00 EDT 1984

OSTI ID:6275037

Lawless, W N

New oxygen ion conducting ceramic materials represented by the formulas Ni(Nb/sub 1//sub -/ /SUB x/ M /SUB x/ )/sub 2/O/sub 6//sub -/ /SUB x/ and Ni/sub 2/(Nb/sub 1//sub -/ /SUB x/ M /SUB x/ )/sub 2/O/sub 7//sub -/ /SUB x/ , wherein M is selected from the group consisting of Zr/sup +4/, Ti/sup +4/, Sn/sup +4/, Sm/sup +4/, Hf/sup +4/ and Ce/sup +4/ and x is a value from 0 to 0.2, are disclosed. These materials, along with Bi/sub 2/O/sub 3/ in solid solution with Y/sub 2/O/sub 3/ or Nb/sub 2/O/sub 5/, may be used in a sensor for determining the oxygen partial pressure of a first gas relative to the oxygen partial pressure of a second gas. The oxygen sensor includes a plurality of layers of the ceramic material and of layers of a porous metallic conductor are arranged to form a body having alternating ceramic and metallic layers, with first alternate ones of the metallic layers being exposed along one side of the body and second alternate ones of the metallic layers being exposed along an opposite side of the body. An electrode connects the first alternate metallic layers, and a second electrode connects the second alternate metallic layers. The device may also be used as a fuel cell, and a method of constructing the device is disclosed.

• Assignee: EDB-85-012882
• Patent Number(s): US 4462891
• OSTI ID: 6275037
• Resource Relation: Patent File Date: Filed date 7 Feb 1983; Other Information: PAT-APPL-464248
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
36 MATERIALS SCIENCE
EXHAUST GASES
MONITORING
FUEL CELLS
DESIGN
OXYGEN METERS
BISMUTH OXIDES
CERAMICS
CHEMICAL COMPOSITION
COMBUSTION CONTROL
ELECTRODES
FUEL-AIR RATIO
HAFNIUM COMPOUNDS
MONITORS
NICKEL OXIDES
NIOBIUM OXIDES
OXYGEN IONS
SAMARIUM COMPOUNDS
SOLID SOLUTIONS
TIN COMPOUNDS
TITANIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
BISMUTH COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
CONTROL
DIRECT ENERGY CONVERTERS
DISPERSIONS
ELECTROCHEMICAL CELLS
FLUIDS
GASEOUS WASTES
GASES
IONS
MEASURING INSTRUMENTS
METERS
MIXTURES
NICKEL COMPOUNDS
NIOBIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
SOLUTIONS
TRANSITION ELEMENT COMPOUNDS
WASTES
300501* - Fuel Cells- Design & Development
360601 - Other Materials- Preparation & Manufacture