A novel sensor for detecting catalyst coking in fuel reforming systems has been developed at Colorado School of Mines. Sensors were manufactured by inkjet printing a suspension of Ni-YSZ to create ~20 �m catalytic and conductive elements. The Ni-YSZ cermet was prepared with a concentration below the percolation limit (~20 vol%) of nickel, ensuring a low electrical conductivity. Sensors were tested in a 1% ethylene environment to induce coking and showed a strong response. The coke load was examined by FESEM.

Development of an impedance-based sensor for detection of coke formation in solid oxide fuel cells

245th National Meeting (2013)

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