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Sulfur resistant sensors

  • US 7,527,717 B2
  • Filed: 06/27/2003
  • Issued: 05/05/2009
  • Est. Priority Date: 06/28/2002
  • Status: Active Grant
First Claim
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1. A solid state device for determining the concentration of oxygen in a gas phase,the solid state device comprising:

  • a solid electrolyte;

    a reference electrode coupled to a surface of the solid electrolyte and being exposed to a gas with a known partial pressure of oxygen; and

    a working electrode including a mixed ion/electron conductor constructed from a ceria solid solution doped with at least one mixed valency element, wherein the working electrode is coupled to the same surface of the solid electrolyte as the reference electrode.

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