Patent ID: 8052854
Filing Date: 2011-11-08
Classification: G01N

Abstract:
1. A gas sensor comprising: a substrate; a pair of interdigitated metal electrodes selected from the group consisting of Pt, Pd, Au, Ir, Ag, Ru, Rh, In, and Os; said electrodes each include an upper surface; a first solid electrolyte resides between said interdigitated electrodes and partially engages said upper surfaces of said electrodes; said first solid electrolyte selected from the group consisting of NASICON, LISICON, KSICON, and β″-Alumina and, a second electrolyte partially engaging said upper surfaces of said electrodes and engaging said first solid electrolyte in at least one point, said second electrolyte comprising an element selected from the group consisting of Na + , K + , Li + , Ag + , H + , Pb 2+ , Sr 2+ , and Ba 2+ ions or combinations thereof.