Triad National Security, LLC

Kannan Ramaiyan

Rangachary Mukundan

Cortney Kreller

A multi-electrode sensor array includes a substrate and n test couples on the substrate, wherein n is an integer of 2 or greater. Each test couple includes a pseudo-reference electrode and a sensing electrode including a material capable of oxidizing or reducing a gas of interest. A solid electrolyte layer that is common to and continuous over the n test couples may cover at least a portion of each pseudo-reference electrode and at least a portion of each sensing electrode. At least one of the n test couples may include an initial test couple and one or more duplicates thereof connected in electrical series, and a mixed potential may be measured across the electrical series. When multiple electrodes having different electrocatalytic activities are combined in the array of n test couples, mixed potential data from the array may be mathematically processed to accurately measure gas concentrations in a mixed-gas environment. The electrodes may be designed and arranged to increase the selectivity and sensitivity of the multi-electrode sensor array.

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Los Alamos, NM, United States of America

Kannan Ramaiyan