G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 27/403 (2006.01) G01N 27/49 (2006.01)
Patent
CA 2286464
An electrochemical gas sensor has a first gas diffusion electrode for a first reaction gas, which is inactive with respect to a second reaction gas at least in a first potential window, and a second gas diffusion electrode for the second reaction gas, which is active with respect to the second reaction gas at least in a second potential window for measuring two different gases in gas mixtures in a casing. The two gas diffusion electrodes are electronically isolated from one another, but electrically connected electrolytically to a reversibly loadable electrode and have contacts for connecting external closing circuits for adjusting the cell currents. The gas mixture is fed to the gas diffusion electrodes in series or parallel. The casing containing the electrodes is, in particular, in the form of a button cell. The reversibly loadable electrode is a Cu/CuO, Zn/ZnO or hydrogen electrode. The gas diffusion electrodes have a porous structure based on carbon or have a porous silver structure.
Helmke Joachim
Holl Konrad
Ilic Dejan
Kohnke Hans-Joachim
Winsel August
Fetherstonhaugh & Co.
Varta Geratebatterie Gmbh
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