The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2014
Filed:
Aug. 20, 2008
Gary W. Hunter, Oberlin, OH (US);
Jennifer C. Xu, Olmsted Township, OH (US);
Gary W. Hunter, Oberlin, OH (US);
Jennifer C. Xu, Olmsted Township, OH (US);
Abstract
A gas sensor comprises a substrate layer; a pair of interdigitated metal electrodes, said electrodes include upper surfaces, the electrodes selected from the group consisting of Pt, Pd, Au, Ir, Ag, Ru, Rh, In, Os, and their alloys. A first layer of solid electrolyte staying in between electrode fingers and partially on said upper surfaces of said electrodes, said first layer selected from NASICON, LISICON, KSICON and β″-Alumina. A second layer of metal carbonate(s) as an auxiliary electrolyte engaging said upper surfaces of the electrodes and the first solid electrolyte. The metal carbonates selected from the group consisting of the following ions Na, K, Li, Ag, H, Pb, Sr, Ba, and any combination thereof. An extra layer of metal oxide selected from the group consisting of SnO, InO, TiO, WO, ZnO, FeO, ITO, CdO, UO, TaO, BaO, MoO, MoO, VO, NbO, CuO, CrO, LaO, RuO, RuO, ReO, ReO, AgO, CoO, CuO, SnO, NiO, PrO, BaO, PdO, HfO, HfOor other metal oxide and their mixtures residing above and in engagement with the second electrolyte to improve sensor performance and/or to reduce sensor heating power consumption.