Electrodes for solid state gas sensor

Patent · Tue Aug 12 00:00:00 EDT 2003

OSTI ID:1007475

Mukundan, Rangachary ^[1]; Brosha, Eric L ^[2]; Garzon, Fernando ^[1]

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1. Santa Fe, NM
2. Los Alamos, NM

A mixed potential electrochemical sensor for the detection of gases has a ceria-based electrolyte with a surface for exposing to the gases to be detected, and with a reference wire electrode and a sensing wire electrode extending through the surface and fixed within the electrolyte as the electrolyte is compressed and sintered. The electrochemical sensor is formed by placing a wire reference electrode and a wire sensing electrode in a die, where each electrode has a first compressed planar section and a second section depending from the first section with the second section of each electrode extending axially within the die. The die is filled with an oxide-electrolyte powder and the powder is pressed within the die with the wire electrodes. The wire-electrodes and the pressed oxide-electrolyte powder are sintered to form a ceramic electrolyte base with a reference wire electrode and a sensing wire electrode depending therefrom.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-36
• Assignee: The Regents of the University of California (Los Alamos, NM)
• Patent Number(s): 6,605,202
• Application Number: 10/175,252
• OSTI ID: 1007475
• Country of Publication: United States
• Language: English